Home / 149,385.24-206,148.96-81,402.66

Finding the Fourth Proportional to 149,385.24, 206,148.96 and 81,402.66

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Solution

The fourth proportional to 149,385.24, 206,148.96 and 81,402.66 is: 112,334.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,385.24 : 206,148.96 = 81,402.66 : x
  2. Step 2: Convert to fraction form
    149,385.24/206,148.96 = 81,402.66/x
  3. Step 3: Cross multiply
    149,385.24x = 206,148.96 × 81,402.66
  4. Step 4: Simplify right side
    149,385.24x = 16,781,073,700.23
  5. Step 5: Solve for x
    x = 16,781,073,700.23/149,385.24
  6. Step 6: Final answer
    x = 112,334.22

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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.