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Finding the Fourth Proportional to 123,065.50, 169,830.48 and 66,476.88

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Solution

The fourth proportional to 123,065.50, 169,830.48 and 66,476.88 is: 91,738.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,065.50 : 169,830.48 = 66,476.88 : x
  2. Step 2: Convert to fraction form
    123,065.50/169,830.48 = 66,476.88/x
  3. Step 3: Cross multiply
    123,065.50x = 169,830.48 × 66,476.88
  4. Step 4: Simplify right side
    123,065.50x = 11,289,799,590.15
  5. Step 5: Solve for x
    x = 11,289,799,590.15/123,065.50
  6. Step 6: Final answer
    x = 91,738.14

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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.