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Finding the Fourth Proportional to 143,860.66, 215,595.71 and 76,375.64

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Solution

The fourth proportional to 143,860.66, 215,595.71 and 76,375.64 is: 114,459.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,860.66 : 215,595.71 = 76,375.64 : x
  2. Step 2: Convert to fraction form
    143,860.66/215,595.71 = 76,375.64/x
  3. Step 3: Cross multiply
    143,860.66x = 215,595.71 × 76,375.64
  4. Step 4: Simplify right side
    143,860.66x = 16,466,260,776.02
  5. Step 5: Solve for x
    x = 16,466,260,776.02/143,860.66
  6. Step 6: Final answer
    x = 114,459.79

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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.