Home / 103,402.17-142,687.58-58,077.81

Finding the Fourth Proportional to 103,402.17, 142,687.58 and 58,077.81

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Solution

The fourth proportional to 103,402.17, 142,687.58 and 58,077.81 is: 80,143.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,402.17 : 142,687.58 = 58,077.81 : x
  2. Step 2: Convert to fraction form
    103,402.17/142,687.58 = 58,077.81/x
  3. Step 3: Cross multiply
    103,402.17x = 142,687.58 × 58,077.81
  4. Step 4: Simplify right side
    103,402.17x = 8,286,981,870.21
  5. Step 5: Solve for x
    x = 8,286,981,870.21/103,402.17
  6. Step 6: Final answer
    x = 80,143.21

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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.