Home / 149,423.68-206,204.84-81,440.71

Finding the Fourth Proportional to 149,423.68, 206,204.84 and 81,440.71

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Solution

The fourth proportional to 149,423.68, 206,204.84 and 81,440.71 is: 112,388.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,423.68 : 206,204.84 = 81,440.71 : x
  2. Step 2: Convert to fraction form
    149,423.68/206,204.84 = 81,440.71/x
  3. Step 3: Cross multiply
    149,423.68x = 206,204.84 × 81,440.71
  4. Step 4: Simplify right side
    149,423.68x = 16,793,468,135.00
  5. Step 5: Solve for x
    x = 16,793,468,135.00/149,423.68
  6. Step 6: Final answer
    x = 112,388.26

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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.