Home / 113,760.20-170,640.30-78,330.80

Finding the Fourth Proportional to 113,760.20, 170,640.30 and 78,330.80

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Solution

The fourth proportional to 113,760.20, 170,640.30 and 78,330.80 is: 117,496.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,760.20 : 170,640.30 = 78,330.80 : x
  2. Step 2: Convert to fraction form
    113,760.20/170,640.30 = 78,330.80/x
  3. Step 3: Cross multiply
    113,760.20x = 170,640.30 × 78,330.80
  4. Step 4: Simplify right side
    113,760.20x = 13,366,391,211.24
  5. Step 5: Solve for x
    x = 13,366,391,211.24/113,760.20
  6. Step 6: Final answer
    x = 117,496.20

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1.5x scale

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.