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Finding the Fourth Proportional to 137,174.88, 189,306.72 and 80,585.76

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Solution

The fourth proportional to 137,174.88, 189,306.72 and 80,585.76 is: 111,211.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,174.88 : 189,306.72 = 80,585.76 : x
  2. Step 2: Convert to fraction form
    137,174.88/189,306.72 = 80,585.76/x
  3. Step 3: Cross multiply
    137,174.88x = 189,306.72 × 80,585.76
  4. Step 4: Simplify right side
    137,174.88x = 15,255,425,904.31
  5. Step 5: Solve for x
    x = 15,255,425,904.31/137,174.88
  6. Step 6: Final answer
    x = 111,211.51

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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.