Home / 143,616.60-215,432.94-43,780.02

Finding the Fourth Proportional to 143,616.60, 215,432.94 and 43,780.02

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Solution

The fourth proportional to 143,616.60, 215,432.94 and 43,780.02 is: 65,672.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,616.60 : 215,432.94 = 43,780.02 : x
  2. Step 2: Convert to fraction form
    143,616.60/215,432.94 = 43,780.02/x
  3. Step 3: Cross multiply
    143,616.60x = 215,432.94 × 43,780.02
  4. Step 4: Simplify right side
    143,616.60x = 9,431,658,421.86
  5. Step 5: Solve for x
    x = 9,431,658,421.86/143,616.60
  6. Step 6: Final answer
    x = 65,672.48

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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.