Home / 138,965.10-208,544.85-89,166.30

Finding the Fourth Proportional to 138,965.10, 208,544.85 and 89,166.30

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Solution

The fourth proportional to 138,965.10, 208,544.85 and 89,166.30 is: 133,811.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,965.10 : 208,544.85 = 89,166.30 : x
  2. Step 2: Convert to fraction form
    138,965.10/208,544.85 = 89,166.30/x
  3. Step 3: Cross multiply
    138,965.10x = 208,544.85 × 89,166.30
  4. Step 4: Simplify right side
    138,965.10x = 18,595,172,658.56
  5. Step 5: Solve for x
    x = 18,595,172,658.56/138,965.10
  6. Step 6: Final answer
    x = 133,811.82

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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.