Home / 138,838.85-208,266.35-39,006.83

Finding the Fourth Proportional to 138,838.85, 208,266.35 and 39,006.83

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Solution

The fourth proportional to 138,838.85, 208,266.35 and 39,006.83 is: 58,512.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,838.85 : 208,266.35 = 39,006.83 : x
  2. Step 2: Convert to fraction form
    138,838.85/208,266.35 = 39,006.83/x
  3. Step 3: Cross multiply
    138,838.85x = 208,266.35 × 39,006.83
  4. Step 4: Simplify right side
    138,838.85x = 8,123,810,109.17
  5. Step 5: Solve for x
    x = 8,123,810,109.17/138,838.85
  6. Step 6: Final answer
    x = 58,512.51

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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.