Home / 102,389.96-141,306.36-57,082.61

Finding the Fourth Proportional to 102,389.96, 141,306.36 and 57,082.61

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Solution

The fourth proportional to 102,389.96, 141,306.36 and 57,082.61 is: 78,778.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,389.96 : 141,306.36 = 57,082.61 : x
  2. Step 2: Convert to fraction form
    102,389.96/141,306.36 = 57,082.61/x
  3. Step 3: Cross multiply
    102,389.96x = 141,306.36 × 57,082.61
  4. Step 4: Simplify right side
    102,389.96x = 8,066,135,838.40
  5. Step 5: Solve for x
    x = 8,066,135,838.40/102,389.96
  6. Step 6: Final answer
    x = 78,778.58

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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.