Home / 143,587.20-215,426.70-43,766.40

Finding the Fourth Proportional to 143,587.20, 215,426.70 and 43,766.40

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Solution

The fourth proportional to 143,587.20, 215,426.70 and 43,766.40 is: 65,663.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,587.20 : 215,426.70 = 43,766.40 : x
  2. Step 2: Convert to fraction form
    143,587.20/215,426.70 = 43,766.40/x
  3. Step 3: Cross multiply
    143,587.20x = 215,426.70 × 43,766.40
  4. Step 4: Simplify right side
    143,587.20x = 9,428,451,122.88
  5. Step 5: Solve for x
    x = 9,428,451,122.88/143,587.20
  6. Step 6: Final answer
    x = 65,663.59

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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.