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Finding the Fourth Proportional to 127,930.56, 176,542.40 and 74,224.80

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Solution

The fourth proportional to 127,930.56, 176,542.40 and 74,224.80 is: 102,429.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,930.56 : 176,542.40 = 74,224.80 : x
  2. Step 2: Convert to fraction form
    127,930.56/176,542.40 = 74,224.80/x
  3. Step 3: Cross multiply
    127,930.56x = 176,542.40 × 74,224.80
  4. Step 4: Simplify right side
    127,930.56x = 13,103,824,331.52
  5. Step 5: Solve for x
    x = 13,103,824,331.52/127,930.56
  6. Step 6: Final answer
    x = 102,429.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.