Home / 156,743.38-235,126.23-77,778.10

Finding the Fourth Proportional to 156,743.38, 235,126.23 and 77,778.10

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Solution

The fourth proportional to 156,743.38, 235,126.23 and 77,778.10 is: 116,672.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,743.38 : 235,126.23 = 77,778.10 : x
  2. Step 2: Convert to fraction form
    156,743.38/235,126.23 = 77,778.10/x
  3. Step 3: Cross multiply
    156,743.38x = 235,126.23 × 77,778.10
  4. Step 4: Simplify right side
    156,743.38x = 18,287,671,429.56
  5. Step 5: Solve for x
    x = 18,287,671,429.56/156,743.38
  6. Step 6: Final answer
    x = 116,672.69

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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.