Home / 149,397.87-206,167.19-81,417.81

Finding the Fourth Proportional to 149,397.87, 206,167.19 and 81,417.81

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Solution

The fourth proportional to 149,397.87, 206,167.19 and 81,417.81 is: 112,355.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,397.87 : 206,167.19 = 81,417.81 : x
  2. Step 2: Convert to fraction form
    149,397.87/206,167.19 = 81,417.81/x
  3. Step 3: Cross multiply
    149,397.87x = 206,167.19 × 81,417.81
  4. Step 4: Simplify right side
    149,397.87x = 16,785,680,696.56
  5. Step 5: Solve for x
    x = 16,785,680,696.56/149,397.87
  6. Step 6: Final answer
    x = 112,355.56

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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.