Home / 143,387.72-215,081.10-36,771.56

Finding the Fourth Proportional to 143,387.72, 215,081.10 and 36,771.56

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Solution

The fourth proportional to 143,387.72, 215,081.10 and 36,771.56 is: 55,157.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,387.72 : 215,081.10 = 36,771.56 : x
  2. Step 2: Convert to fraction form
    143,387.72/215,081.10 = 36,771.56/x
  3. Step 3: Cross multiply
    143,387.72x = 215,081.10 × 36,771.56
  4. Step 4: Simplify right side
    143,387.72x = 7,908,867,573.52
  5. Step 5: Solve for x
    x = 7,908,867,573.52/143,387.72
  6. Step 6: Final answer
    x = 55,157.22

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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.