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Finding the Fourth Proportional to 127,428.50, 175,592 and 98,572.86

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Solution

The fourth proportional to 127,428.50, 175,592 and 98,572.86 is: 135,829.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,428.50 : 175,592 = 98,572.86 : x
  2. Step 2: Convert to fraction form
    127,428.50/175,592 = 98,572.86/x
  3. Step 3: Cross multiply
    127,428.50x = 175,592 × 98,572.86
  4. Step 4: Simplify right side
    127,428.50x = 17,308,605,633.12
  5. Step 5: Solve for x
    x = 17,308,605,633.12/127,428.50
  6. Step 6: Final answer
    x = 135,829.94

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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.