Home / 115,751.30-173,447.34-80,281.78

Finding the Fourth Proportional to 115,751.30, 173,447.34 and 80,281.78

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Solution

The fourth proportional to 115,751.30, 173,447.34 and 80,281.78 is: 120,298.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,751.30 : 173,447.34 = 80,281.78 : x
  2. Step 2: Convert to fraction form
    115,751.30/173,447.34 = 80,281.78/x
  3. Step 3: Cross multiply
    115,751.30x = 173,447.34 × 80,281.78
  4. Step 4: Simplify right side
    115,751.30x = 13,924,661,191.47
  5. Step 5: Solve for x
    x = 13,924,661,191.47/115,751.30
  6. Step 6: Final answer
    x = 120,298.10

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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.