Home / 82,640,147.60-123,960,221.40-77,601,299.60

Finding the Fourth Proportional to 82,640,147.60, 123,960,221.40 and 77,601,299.60

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Solution

The fourth proportional to 82,640,147.60, 123,960,221.40 and 77,601,299.60 is: 116,401,949.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,640,147.60 : 123,960,221.40 = 77,601,299.60 : x
  2. Step 2: Convert to fraction form
    82,640,147.60/123,960,221.40 = 77,601,299.60/x
  3. Step 3: Cross multiply
    82,640,147.60x = 123,960,221.40 × 77,601,299.60
  4. Step 4: Simplify right side
    82,640,147.60x = 9,619,474,279,343,732
  5. Step 5: Solve for x
    x = 9,619,474,279,343,732/82,640,147.60
  6. Step 6: Final answer
    x = 116,401,949.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.