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Finding the Fourth Proportional to 143,581.88, 215,360.50 and 87,407.41

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Solution

The fourth proportional to 143,581.88, 215,360.50 and 87,407.41 is: 131,103.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,581.88 : 215,360.50 = 87,407.41 : x
  2. Step 2: Convert to fraction form
    143,581.88/215,360.50 = 87,407.41/x
  3. Step 3: Cross multiply
    143,581.88x = 215,360.50 × 87,407.41
  4. Step 4: Simplify right side
    143,581.88x = 18,824,103,521.31
  5. Step 5: Solve for x
    x = 18,824,103,521.31/143,581.88
  6. Step 6: Final answer
    x = 131,103.62

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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.