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Finding the Fourth Proportional to 123,132.65, 169,923.06 and 66,544.02

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Solution

The fourth proportional to 123,132.65, 169,923.06 and 66,544.02 is: 91,830.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,132.65 : 169,923.06 = 66,544.02 : x
  2. Step 2: Convert to fraction form
    123,132.65/169,923.06 = 66,544.02/x
  3. Step 3: Cross multiply
    123,132.65x = 169,923.06 × 66,544.02
  4. Step 4: Simplify right side
    123,132.65x = 11,307,363,503.10
  5. Step 5: Solve for x
    x = 11,307,363,503.10/123,132.65
  6. Step 6: Final answer
    x = 91,830.75

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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.