Home / 138,838.25-208,265.45-39,006.23

Finding the Fourth Proportional to 138,838.25, 208,265.45 and 39,006.23

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Solution

The fourth proportional to 138,838.25, 208,265.45 and 39,006.23 is: 58,511.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,838.25 : 208,265.45 = 39,006.23 : x
  2. Step 2: Convert to fraction form
    138,838.25/208,265.45 = 39,006.23/x
  3. Step 3: Cross multiply
    138,838.25x = 208,265.45 × 39,006.23
  4. Step 4: Simplify right side
    138,838.25x = 8,123,650,043.75
  5. Step 5: Solve for x
    x = 8,123,650,043.75/138,838.25
  6. Step 6: Final answer
    x = 58,511.61

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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.