Home / 143,390.43-215,039.60-47,306.04

Finding the Fourth Proportional to 143,390.43, 215,039.60 and 47,306.04

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Solution

The fourth proportional to 143,390.43, 215,039.60 and 47,306.04 is: 70,943.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,390.43 : 215,039.60 = 47,306.04 : x
  2. Step 2: Convert to fraction form
    143,390.43/215,039.60 = 47,306.04/x
  3. Step 3: Cross multiply
    143,390.43x = 215,039.60 × 47,306.04
  4. Step 4: Simplify right side
    143,390.43x = 10,172,671,682.65
  5. Step 5: Solve for x
    x = 10,172,671,682.65/143,390.43
  6. Step 6: Final answer
    x = 70,943.87

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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.