Home / 145,839.85-218,419.86-140,788.79

Finding the Fourth Proportional to 145,839.85, 218,419.86 and 140,788.79

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Solution

The fourth proportional to 145,839.85, 218,419.86 and 140,788.79 is: 210,855.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,839.85 : 218,419.86 = 140,788.79 : x
  2. Step 2: Convert to fraction form
    145,839.85/218,419.86 = 140,788.79/x
  3. Step 3: Cross multiply
    145,839.85x = 218,419.86 × 140,788.79
  4. Step 4: Simplify right side
    145,839.85x = 30,751,067,801.37
  5. Step 5: Solve for x
    x = 30,751,067,801.37/145,839.85
  6. Step 6: Final answer
    x = 210,855.04

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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.