Home / 86,765.20-130,191.36-34,212.40

Finding the Fourth Proportional to 86,765.20, 130,191.36 and 34,212.40

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Solution

The fourth proportional to 86,765.20, 130,191.36 and 34,212.40 is: 51,335.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,765.20 : 130,191.36 = 34,212.40 : x
  2. Step 2: Convert to fraction form
    86,765.20/130,191.36 = 34,212.40/x
  3. Step 3: Cross multiply
    86,765.20x = 130,191.36 × 34,212.40
  4. Step 4: Simplify right side
    86,765.20x = 4,454,158,884.86
  5. Step 5: Solve for x
    x = 4,454,158,884.86/86,765.20
  6. Step 6: Final answer
    x = 51,335.78

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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.