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Finding the Fourth Proportional to 137,245.92, 189,248.96 and 89,410.56

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Solution

The fourth proportional to 137,245.92, 189,248.96 and 89,410.56 is: 123,288.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,245.92 : 189,248.96 = 89,410.56 : x
  2. Step 2: Convert to fraction form
    137,245.92/189,248.96 = 89,410.56/x
  3. Step 3: Cross multiply
    137,245.92x = 189,248.96 × 89,410.56
  4. Step 4: Simplify right side
    137,245.92x = 16,920,855,493.02
  5. Step 5: Solve for x
    x = 16,920,855,493.02/137,245.92
  6. Step 6: Final answer
    x = 123,288.59

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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.