Home / 102,406.10-141,321.02-57,086.96

Finding the Fourth Proportional to 102,406.10, 141,321.02 and 57,086.96

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Solution

The fourth proportional to 102,406.10, 141,321.02 and 57,086.96 is: 78,780.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,406.10 : 141,321.02 = 57,086.96 : x
  2. Step 2: Convert to fraction form
    102,406.10/141,321.02 = 57,086.96/x
  3. Step 3: Cross multiply
    102,406.10x = 141,321.02 × 57,086.96
  4. Step 4: Simplify right side
    102,406.10x = 8,067,586,423.86
  5. Step 5: Solve for x
    x = 8,067,586,423.86/102,406.10
  6. Step 6: Final answer
    x = 78,780.33

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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.