Home / 130,023.20-195,034.80-85,736.45

Finding the Fourth Proportional to 130,023.20, 195,034.80 and 85,736.45

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Solution

The fourth proportional to 130,023.20, 195,034.80 and 85,736.45 is: 128,604.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,023.20 : 195,034.80 = 85,736.45 : x
  2. Step 2: Convert to fraction form
    130,023.20/195,034.80 = 85,736.45/x
  3. Step 3: Cross multiply
    130,023.20x = 195,034.80 × 85,736.45
  4. Step 4: Simplify right side
    130,023.20x = 16,721,591,378.46
  5. Step 5: Solve for x
    x = 16,721,591,378.46/130,023.20
  6. Step 6: Final answer
    x = 128,604.68

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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.