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Finding the Fourth Proportional to 123,477.55, 170,397.95 and 66,888.92

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Solution

The fourth proportional to 123,477.55, 170,397.95 and 66,888.92 is: 92,306.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,477.55 : 170,397.95 = 66,888.92 : x
  2. Step 2: Convert to fraction form
    123,477.55/170,397.95 = 66,888.92/x
  3. Step 3: Cross multiply
    123,477.55x = 170,397.95 × 66,888.92
  4. Step 4: Simplify right side
    123,477.55x = 11,397,734,937.26
  5. Step 5: Solve for x
    x = 11,397,734,937.26/123,477.55
  6. Step 6: Final answer
    x = 92,306.13

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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.