Home / 142,811.40-214,217.10-54,067.80

Finding the Fourth Proportional to 142,811.40, 214,217.10 and 54,067.80

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Solution

The fourth proportional to 142,811.40, 214,217.10 and 54,067.80 is: 81,101.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,811.40 : 214,217.10 = 54,067.80 : x
  2. Step 2: Convert to fraction form
    142,811.40/214,217.10 = 54,067.80/x
  3. Step 3: Cross multiply
    142,811.40x = 214,217.10 × 54,067.80
  4. Step 4: Simplify right side
    142,811.40x = 11,582,247,319.38
  5. Step 5: Solve for x
    x = 11,582,247,319.38/142,811.40
  6. Step 6: Final answer
    x = 81,101.70

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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.