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Finding the Fourth Proportional to 122,754.71, 169,387.70 and 69,038.57

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Solution

The fourth proportional to 122,754.71, 169,387.70 and 69,038.57 is: 95,265.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,754.71 : 169,387.70 = 69,038.57 : x
  2. Step 2: Convert to fraction form
    122,754.71/169,387.70 = 69,038.57/x
  3. Step 3: Cross multiply
    122,754.71x = 169,387.70 × 69,038.57
  4. Step 4: Simplify right side
    122,754.71x = 11,694,283,391.46
  5. Step 5: Solve for x
    x = 11,694,283,391.46/122,754.71
  6. Step 6: Final answer
    x = 95,265.46

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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.