Home / 149,535.60-206,359.36-81,552.72

Finding the Fourth Proportional to 149,535.60, 206,359.36 and 81,552.72

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Solution

The fourth proportional to 149,535.60, 206,359.36 and 81,552.72 is: 112,542.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,535.60 : 206,359.36 = 81,552.72 : x
  2. Step 2: Convert to fraction form
    149,535.60/206,359.36 = 81,552.72/x
  3. Step 3: Cross multiply
    149,535.60x = 206,359.36 × 81,552.72
  4. Step 4: Simplify right side
    149,535.60x = 16,829,167,105.46
  5. Step 5: Solve for x
    x = 16,829,167,105.46/149,535.60
  6. Step 6: Final answer
    x = 112,542.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.