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Finding the Fourth Proportional to 143,862.66, 215,598.70 and 76,377.64

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Solution

The fourth proportional to 143,862.66, 215,598.70 and 76,377.64 is: 114,462.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,862.66 : 215,598.70 = 76,377.64 : x
  2. Step 2: Convert to fraction form
    143,862.66/215,598.70 = 76,377.64/x
  3. Step 3: Cross multiply
    143,862.66x = 215,598.70 × 76,377.64
  4. Step 4: Simplify right side
    143,862.66x = 16,466,919,893.07
  5. Step 5: Solve for x
    x = 16,466,919,893.07/143,862.66
  6. Step 6: Final answer
    x = 114,462.78

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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.