Home / 138,845.10-208,364.85-60,015.90

Finding the Fourth Proportional to 138,845.10, 208,364.85 and 60,015.90

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Solution

The fourth proportional to 138,845.10, 208,364.85 and 60,015.90 is: 90,065.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,845.10 : 208,364.85 = 60,015.90 : x
  2. Step 2: Convert to fraction form
    138,845.10/208,364.85 = 60,015.90/x
  3. Step 3: Cross multiply
    138,845.10x = 208,364.85 × 60,015.90
  4. Step 4: Simplify right side
    138,845.10x = 12,505,204,001.12
  5. Step 5: Solve for x
    x = 12,505,204,001.12/138,845.10
  6. Step 6: Final answer
    x = 90,065.86

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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.