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Finding the Fourth Proportional to 123,628.88, 185,192.76 and 98,711.12

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Solution

The fourth proportional to 123,628.88, 185,192.76 and 98,711.12 is: 147,866.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,628.88 : 185,192.76 = 98,711.12 : x
  2. Step 2: Convert to fraction form
    123,628.88/185,192.76 = 98,711.12/x
  3. Step 3: Cross multiply
    123,628.88x = 185,192.76 × 98,711.12
  4. Step 4: Simplify right side
    123,628.88x = 18,280,584,755.49
  5. Step 5: Solve for x
    x = 18,280,584,755.49/123,628.88
  6. Step 6: Final answer
    x = 147,866.62

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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.