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Finding the Fourth Proportional to 137,245.50, 189,248.39 and 89,410.14

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Solution

The fourth proportional to 137,245.50, 189,248.39 and 89,410.14 is: 123,288.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,245.50 : 189,248.39 = 89,410.14 : x
  2. Step 2: Convert to fraction form
    137,245.50/189,248.39 = 89,410.14/x
  3. Step 3: Cross multiply
    137,245.50x = 189,248.39 × 89,410.14
  4. Step 4: Simplify right side
    137,245.50x = 16,920,725,977.88
  5. Step 5: Solve for x
    x = 16,920,725,977.88/137,245.50
  6. Step 6: Final answer
    x = 123,288.02

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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.