Home / 138,999.17-208,355.49-54,725.15

Finding the Fourth Proportional to 138,999.17, 208,355.49 and 54,725.15

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Solution

The fourth proportional to 138,999.17, 208,355.49 and 54,725.15 is: 82,031.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,999.17 : 208,355.49 = 54,725.15 : x
  2. Step 2: Convert to fraction form
    138,999.17/208,355.49 = 54,725.15/x
  3. Step 3: Cross multiply
    138,999.17x = 208,355.49 × 54,725.15
  4. Step 4: Simplify right side
    138,999.17x = 11,402,284,401.80
  5. Step 5: Solve for x
    x = 11,402,284,401.80/138,999.17
  6. Step 6: Final answer
    x = 82,031.32

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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.