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Finding the Fourth Proportional to 123,160.89, 169,963.91 and 72,161.41

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Solution

The fourth proportional to 123,160.89, 169,963.91 and 72,161.41 is: 99,583.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,160.89 : 169,963.91 = 72,161.41 : x
  2. Step 2: Convert to fraction form
    123,160.89/169,963.91 = 72,161.41/x
  3. Step 3: Cross multiply
    123,160.89x = 169,963.91 × 72,161.41
  4. Step 4: Simplify right side
    123,160.89x = 12,264,835,394.71
  5. Step 5: Solve for x
    x = 12,264,835,394.71/123,160.89
  6. Step 6: Final answer
    x = 99,583.85

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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.