Home / 143,604.38-215,406.57-38,420.61

Finding the Fourth Proportional to 143,604.38, 215,406.57 and 38,420.61

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Solution

The fourth proportional to 143,604.38, 215,406.57 and 38,420.61 is: 57,630.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,604.38 : 215,406.57 = 38,420.61 : x
  2. Step 2: Convert to fraction form
    143,604.38/215,406.57 = 38,420.61/x
  3. Step 3: Cross multiply
    143,604.38x = 215,406.57 × 38,420.61
  4. Step 4: Simplify right side
    143,604.38x = 8,276,051,817.41
  5. Step 5: Solve for x
    x = 8,276,051,817.41/143,604.38
  6. Step 6: Final answer
    x = 57,630.92

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1.5x scale

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.