Home / 149,407.17-206,176.65-81,422.76

Finding the Fourth Proportional to 149,407.17, 206,176.65 and 81,422.76

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Solution

The fourth proportional to 149,407.17, 206,176.65 and 81,422.76 is: 112,360.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,407.17 : 206,176.65 = 81,422.76 : x
  2. Step 2: Convert to fraction form
    149,407.17/206,176.65 = 81,422.76/x
  3. Step 3: Cross multiply
    149,407.17x = 206,176.65 × 81,422.76
  4. Step 4: Simplify right side
    149,407.17x = 16,787,471,890.55
  5. Step 5: Solve for x
    x = 16,787,471,890.55/149,407.17
  6. Step 6: Final answer
    x = 112,360.55

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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.