Home / 138,963.46-208,447.48-39,126.05

Finding the Fourth Proportional to 138,963.46, 208,447.48 and 39,126.05

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Solution

The fourth proportional to 138,963.46, 208,447.48 and 39,126.05 is: 58,689.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,963.46 : 208,447.48 = 39,126.05 : x
  2. Step 2: Convert to fraction form
    138,963.46/208,447.48 = 39,126.05/x
  3. Step 3: Cross multiply
    138,963.46x = 208,447.48 × 39,126.05
  4. Step 4: Simplify right side
    138,963.46x = 8,155,726,524.85
  5. Step 5: Solve for x
    x = 8,155,726,524.85/138,963.46
  6. Step 6: Final answer
    x = 58,689.72

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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.