Home / 142,765.40-214,067.10-54,021.80

Finding the Fourth Proportional to 142,765.40, 214,067.10 and 54,021.80

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Solution

The fourth proportional to 142,765.40, 214,067.10 and 54,021.80 is: 81,002.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,765.40 : 214,067.10 = 54,021.80 : x
  2. Step 2: Convert to fraction form
    142,765.40/214,067.10 = 54,021.80/x
  3. Step 3: Cross multiply
    142,765.40x = 214,067.10 × 54,021.80
  4. Step 4: Simplify right side
    142,765.40x = 11,564,290,062.78
  5. Step 5: Solve for x
    x = 11,564,290,062.78/142,765.40
  6. Step 6: Final answer
    x = 81,002.05

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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.