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Finding the Fourth Proportional to 123,068.13, 169,834.08 and 66,479.50

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Solution

The fourth proportional to 123,068.13, 169,834.08 and 66,479.50 is: 91,741.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,068.13 : 169,834.08 = 66,479.50 : x
  2. Step 2: Convert to fraction form
    123,068.13/169,834.08 = 66,479.50/x
  3. Step 3: Cross multiply
    123,068.13x = 169,834.08 × 66,479.50
  4. Step 4: Simplify right side
    123,068.13x = 11,290,484,721.36
  5. Step 5: Solve for x
    x = 11,290,484,721.36/123,068.13
  6. Step 6: Final answer
    x = 91,741.74

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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.