Home / 102,680.20-141,622.86-64,918

Finding the Fourth Proportional to 102,680.20, 141,622.86 and 64,918

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Solution

The fourth proportional to 102,680.20, 141,622.86 and 64,918 is: 89,538.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,680.20 : 141,622.86 = 64,918 : x
  2. Step 2: Convert to fraction form
    102,680.20/141,622.86 = 64,918/x
  3. Step 3: Cross multiply
    102,680.20x = 141,622.86 × 64,918
  4. Step 4: Simplify right side
    102,680.20x = 9,193,872,825.48
  5. Step 5: Solve for x
    x = 9,193,872,825.48/102,680.20
  6. Step 6: Final answer
    x = 89,538.91

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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.