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Finding the Fourth Proportional to 123,465.76, 170,382.76 and 66,877.13

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Solution

The fourth proportional to 123,465.76, 170,382.76 and 66,877.13 is: 92,290.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,465.76 : 170,382.76 = 66,877.13 : x
  2. Step 2: Convert to fraction form
    123,465.76/170,382.76 = 66,877.13/x
  3. Step 3: Cross multiply
    123,465.76x = 170,382.76 × 66,877.13
  4. Step 4: Simplify right side
    123,465.76x = 11,394,710,249.04
  5. Step 5: Solve for x
    x = 11,394,710,249.04/123,465.76
  6. Step 6: Final answer
    x = 92,290.45

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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.