Home / 142,112.39-213,189.65-47,311.61

Finding the Fourth Proportional to 142,112.39, 213,189.65 and 47,311.61

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Solution

The fourth proportional to 142,112.39, 213,189.65 and 47,311.61 is: 70,974.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,112.39 : 213,189.65 = 47,311.61 : x
  2. Step 2: Convert to fraction form
    142,112.39/213,189.65 = 47,311.61/x
  3. Step 3: Cross multiply
    142,112.39x = 213,189.65 × 47,311.61
  4. Step 4: Simplify right side
    142,112.39x = 10,086,345,340.28
  5. Step 5: Solve for x
    x = 10,086,345,340.28/142,112.39
  6. Step 6: Final answer
    x = 70,974.43

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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.