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Finding the Fourth Proportional to 126,874.62, 190,192.72 and 42,575.66

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Solution

The fourth proportional to 126,874.62, 190,192.72 and 42,575.66 is: 63,823.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,874.62 : 190,192.72 = 42,575.66 : x
  2. Step 2: Convert to fraction form
    126,874.62/190,192.72 = 42,575.66/x
  3. Step 3: Cross multiply
    126,874.62x = 190,192.72 × 42,575.66
  4. Step 4: Simplify right side
    126,874.62x = 8,097,579,417.35
  5. Step 5: Solve for x
    x = 8,097,579,417.35/126,874.62
  6. Step 6: Final answer
    x = 63,823.48

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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.