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Finding the Fourth Proportional to 143,695.76, 215,623.02 and 54,961.88

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Solution

The fourth proportional to 143,695.76, 215,623.02 and 54,961.88 is: 82,473.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,695.76 : 215,623.02 = 54,961.88 : x
  2. Step 2: Convert to fraction form
    143,695.76/215,623.02 = 54,961.88/x
  3. Step 3: Cross multiply
    143,695.76x = 215,623.02 × 54,961.88
  4. Step 4: Simplify right side
    143,695.76x = 11,851,046,550.48
  5. Step 5: Solve for x
    x = 11,851,046,550.48/143,695.76
  6. Step 6: Final answer
    x = 82,473.18

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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.