Home / 102,387.76-141,295.28-57,064.72

Finding the Fourth Proportional to 102,387.76, 141,295.28 and 57,064.72

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Solution

The fourth proportional to 102,387.76, 141,295.28 and 57,064.72 is: 78,749.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,387.76 : 141,295.28 = 57,064.72 : x
  2. Step 2: Convert to fraction form
    102,387.76/141,295.28 = 57,064.72/x
  3. Step 3: Cross multiply
    102,387.76x = 141,295.28 × 57,064.72
  4. Step 4: Simplify right side
    102,387.76x = 8,062,975,590.52
  5. Step 5: Solve for x
    x = 8,062,975,590.52/102,387.76
  6. Step 6: Final answer
    x = 78,749.41

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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.