Home / 143,382.40-215,000.70-84,236.20

Finding the Fourth Proportional to 143,382.40, 215,000.70 and 84,236.20

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Solution

The fourth proportional to 143,382.40, 215,000.70 and 84,236.20 is: 126,311.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,382.40 : 215,000.70 = 84,236.20 : x
  2. Step 2: Convert to fraction form
    143,382.40/215,000.70 = 84,236.20/x
  3. Step 3: Cross multiply
    143,382.40x = 215,000.70 × 84,236.20
  4. Step 4: Simplify right side
    143,382.40x = 18,110,841,965.34
  5. Step 5: Solve for x
    x = 18,110,841,965.34/143,382.40
  6. Step 6: Final answer
    x = 126,311.47

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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.