Home / 143,753.30-215,391.56-87,423.02

Finding the Fourth Proportional to 143,753.30, 215,391.56 and 87,423.02

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Solution

The fourth proportional to 143,753.30, 215,391.56 and 87,423.02 is: 130,989.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,753.30 : 215,391.56 = 87,423.02 : x
  2. Step 2: Convert to fraction form
    143,753.30/215,391.56 = 87,423.02/x
  3. Step 3: Cross multiply
    143,753.30x = 215,391.56 × 87,423.02
  4. Step 4: Simplify right side
    143,753.30x = 18,830,180,657.71
  5. Step 5: Solve for x
    x = 18,830,180,657.71/143,753.30
  6. Step 6: Final answer
    x = 130,989.55

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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.