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Finding the Fourth Proportional to 123,069.13, 169,835.46 and 66,480.50

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Solution

The fourth proportional to 123,069.13, 169,835.46 and 66,480.50 is: 91,743.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,069.13 : 169,835.46 = 66,480.50 : x
  2. Step 2: Convert to fraction form
    123,069.13/169,835.46 = 66,480.50/x
  3. Step 3: Cross multiply
    123,069.13x = 169,835.46 × 66,480.50
  4. Step 4: Simplify right side
    123,069.13x = 11,290,746,298.53
  5. Step 5: Solve for x
    x = 11,290,746,298.53/123,069.13
  6. Step 6: Final answer
    x = 91,743.12

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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.