Home / 143,724.33-215,423.01-87,440.38

Finding the Fourth Proportional to 143,724.33, 215,423.01 and 87,440.38

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Solution

The fourth proportional to 143,724.33, 215,423.01 and 87,440.38 is: 131,061.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,724.33 : 215,423.01 = 87,440.38 : x
  2. Step 2: Convert to fraction form
    143,724.33/215,423.01 = 87,440.38/x
  3. Step 3: Cross multiply
    143,724.33x = 215,423.01 × 87,440.38
  4. Step 4: Simplify right side
    143,724.33x = 18,836,668,996.63
  5. Step 5: Solve for x
    x = 18,836,668,996.63/143,724.33
  6. Step 6: Final answer
    x = 131,061.10

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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.