Home / 98,103.75-135,387.62-57,819.21

Finding the Fourth Proportional to 98,103.75, 135,387.62 and 57,819.21

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Solution

The fourth proportional to 98,103.75, 135,387.62 and 57,819.21 is: 79,793.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,103.75 : 135,387.62 = 57,819.21 : x
  2. Step 2: Convert to fraction form
    98,103.75/135,387.62 = 57,819.21/x
  3. Step 3: Cross multiply
    98,103.75x = 135,387.62 × 57,819.21
  4. Step 4: Simplify right side
    98,103.75x = 7,828,005,232.18
  5. Step 5: Solve for x
    x = 7,828,005,232.18/98,103.75
  6. Step 6: Final answer
    x = 79,793.13

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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.