Home / 113,671.90-156,863.61-62,686.78

Finding the Fourth Proportional to 113,671.90, 156,863.61 and 62,686.78

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Solution

The fourth proportional to 113,671.90, 156,863.61 and 62,686.78 is: 86,505.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,671.90 : 156,863.61 = 62,686.78 : x
  2. Step 2: Convert to fraction form
    113,671.90/156,863.61 = 62,686.78/x
  3. Step 3: Cross multiply
    113,671.90x = 156,863.61 × 62,686.78
  4. Step 4: Simplify right side
    113,671.90x = 9,833,274,217.92
  5. Step 5: Solve for x
    x = 9,833,274,217.92/113,671.90
  6. Step 6: Final answer
    x = 86,505.76

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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.