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Finding the Fourth Proportional to 137,625.96, 189,843.12 and 86,557.62

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Solution

The fourth proportional to 137,625.96, 189,843.12 and 86,557.62 is: 119,398.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,625.96 : 189,843.12 = 86,557.62 : x
  2. Step 2: Convert to fraction form
    137,625.96/189,843.12 = 86,557.62/x
  3. Step 3: Cross multiply
    137,625.96x = 189,843.12 × 86,557.62
  4. Step 4: Simplify right side
    137,625.96x = 16,432,368,640.57
  5. Step 5: Solve for x
    x = 16,432,368,640.57/137,625.96
  6. Step 6: Final answer
    x = 119,398.76

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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.