Home / 149,773.92-206,684.04-81,792.72

Finding the Fourth Proportional to 149,773.92, 206,684.04 and 81,792.72

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Solution

The fourth proportional to 149,773.92, 206,684.04 and 81,792.72 is: 112,871.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,773.92 : 206,684.04 = 81,792.72 : x
  2. Step 2: Convert to fraction form
    149,773.92/206,684.04 = 81,792.72/x
  3. Step 3: Cross multiply
    149,773.92x = 206,684.04 × 81,792.72
  4. Step 4: Simplify right side
    149,773.92x = 16,905,249,812.19
  5. Step 5: Solve for x
    x = 16,905,249,812.19/149,773.92
  6. Step 6: Final answer
    x = 112,871.79

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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.