Home / 98,191.57-135,519.75-57,909.76

Finding the Fourth Proportional to 98,191.57, 135,519.75 and 57,909.76

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Solution

The fourth proportional to 98,191.57, 135,519.75 and 57,909.76 is: 79,924.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,191.57 : 135,519.75 = 57,909.76 : x
  2. Step 2: Convert to fraction form
    98,191.57/135,519.75 = 57,909.76/x
  3. Step 3: Cross multiply
    98,191.57x = 135,519.75 × 57,909.76
  4. Step 4: Simplify right side
    98,191.57x = 7,847,915,520.16
  5. Step 5: Solve for x
    x = 7,847,915,520.16/98,191.57
  6. Step 6: Final answer
    x = 79,924.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.