Home / 138,732.20-208,098.30-99,366.20

Finding the Fourth Proportional to 138,732.20, 208,098.30 and 99,366.20

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Solution

The fourth proportional to 138,732.20, 208,098.30 and 99,366.20 is: 149,049.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,732.20 : 208,098.30 = 99,366.20 : x
  2. Step 2: Convert to fraction form
    138,732.20/208,098.30 = 99,366.20/x
  3. Step 3: Cross multiply
    138,732.20x = 208,098.30 × 99,366.20
  4. Step 4: Simplify right side
    138,732.20x = 20,677,937,297.46
  5. Step 5: Solve for x
    x = 20,677,937,297.46/138,732.20
  6. Step 6: Final answer
    x = 149,049.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.