Home / 131,868.38-182,082.66-121,792.79

Finding the Fourth Proportional to 131,868.38, 182,082.66 and 121,792.79

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Solution

The fourth proportional to 131,868.38, 182,082.66 and 121,792.79 is: 168,170.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,868.38 : 182,082.66 = 121,792.79 : x
  2. Step 2: Convert to fraction form
    131,868.38/182,082.66 = 121,792.79/x
  3. Step 3: Cross multiply
    131,868.38x = 182,082.66 × 121,792.79
  4. Step 4: Simplify right side
    131,868.38x = 22,176,355,172.02
  5. Step 5: Solve for x
    x = 22,176,355,172.02/131,868.38
  6. Step 6: Final answer
    x = 168,170.38

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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.