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Finding the Fourth Proportional to 143,690.58, 215,535.86 and 43,851.28

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Solution

The fourth proportional to 143,690.58, 215,535.86 and 43,851.28 is: 65,776.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,690.58 : 215,535.86 = 43,851.28 : x
  2. Step 2: Convert to fraction form
    143,690.58/215,535.86 = 43,851.28/x
  3. Step 3: Cross multiply
    143,690.58x = 215,535.86 × 43,851.28
  4. Step 4: Simplify right side
    143,690.58x = 9,451,523,346.90
  5. Step 5: Solve for x
    x = 9,451,523,346.90/143,690.58
  6. Step 6: Final answer
    x = 65,776.92

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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.