Home / 138,997.16-208,507.98-39,158.18

Finding the Fourth Proportional to 138,997.16, 208,507.98 and 39,158.18

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Solution

The fourth proportional to 138,997.16, 208,507.98 and 39,158.18 is: 58,740.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,997.16 : 208,507.98 = 39,158.18 : x
  2. Step 2: Convert to fraction form
    138,997.16/208,507.98 = 39,158.18/x
  3. Step 3: Cross multiply
    138,997.16x = 208,507.98 × 39,158.18
  4. Step 4: Simplify right side
    138,997.16x = 8,164,793,012.28
  5. Step 5: Solve for x
    x = 8,164,793,012.28/138,997.16
  6. Step 6: Final answer
    x = 58,740.72

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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.