Home / 126,851.30-190,144.11-42,590.78

Finding the Fourth Proportional to 126,851.30, 190,144.11 and 42,590.78

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Solution

The fourth proportional to 126,851.30, 190,144.11 and 42,590.78 is: 63,841.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,851.30 : 190,144.11 = 42,590.78 : x
  2. Step 2: Convert to fraction form
    126,851.30/190,144.11 = 42,590.78/x
  3. Step 3: Cross multiply
    126,851.30x = 190,144.11 × 42,590.78
  4. Step 4: Simplify right side
    126,851.30x = 8,098,385,957.31
  5. Step 5: Solve for x
    x = 8,098,385,957.31/126,851.30
  6. Step 6: Final answer
    x = 63,841.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.