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Finding the Fourth Proportional to 127,252.90, 175,602.15 and 72,806.15

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Solution

The fourth proportional to 127,252.90, 175,602.15 and 72,806.15 is: 100,468.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,252.90 : 175,602.15 = 72,806.15 : x
  2. Step 2: Convert to fraction form
    127,252.90/175,602.15 = 72,806.15/x
  3. Step 3: Cross multiply
    127,252.90x = 175,602.15 × 72,806.15
  4. Step 4: Simplify right side
    127,252.90x = 12,784,916,449.20
  5. Step 5: Solve for x
    x = 12,784,916,449.20/127,252.90
  6. Step 6: Final answer
    x = 100,468.57

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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.