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Finding the Fourth Proportional to 123,077.56, 169,860.62 and 71,406.04

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Solution

The fourth proportional to 123,077.56, 169,860.62 and 71,406.04 is: 98,548.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,077.56 : 169,860.62 = 71,406.04 : x
  2. Step 2: Convert to fraction form
    123,077.56/169,860.62 = 71,406.04/x
  3. Step 3: Cross multiply
    123,077.56x = 169,860.62 × 71,406.04
  4. Step 4: Simplify right side
    123,077.56x = 12,129,073,842.57
  5. Step 5: Solve for x
    x = 12,129,073,842.57/123,077.56
  6. Step 6: Final answer
    x = 98,548.22

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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.