Home / 126,281.90-189,192.45-102,781.10

Finding the Fourth Proportional to 126,281.90, 189,192.45 and 102,781.10

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Solution

The fourth proportional to 126,281.90, 189,192.45 and 102,781.10 is: 153,984.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,281.90 : 189,192.45 = 102,781.10 : x
  2. Step 2: Convert to fraction form
    126,281.90/189,192.45 = 102,781.10/x
  3. Step 3: Cross multiply
    126,281.90x = 189,192.45 × 102,781.10
  4. Step 4: Simplify right side
    126,281.90x = 19,445,408,122.70
  5. Step 5: Solve for x
    x = 19,445,408,122.70/126,281.90
  6. Step 6: Final answer
    x = 153,984.13

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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.