Home / 82,225.40-123,338.10-78,999.80

Finding the Fourth Proportional to 82,225.40, 123,338.10 and 78,999.80

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Solution

The fourth proportional to 82,225.40, 123,338.10 and 78,999.80 is: 118,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,225.40 : 123,338.10 = 78,999.80 : x
  2. Step 2: Convert to fraction form
    82,225.40/123,338.10 = 78,999.80/x
  3. Step 3: Cross multiply
    82,225.40x = 123,338.10 × 78,999.80
  4. Step 4: Simplify right side
    82,225.40x = 9,743,685,232.38
  5. Step 5: Solve for x
    x = 9,743,685,232.38/82,225.40
  6. Step 6: Final answer
    x = 118,499.70

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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.