Home / 86,780.20-130,170.30-67,097.20

Finding the Fourth Proportional to 86,780.20, 130,170.30 and 67,097.20

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Solution

The fourth proportional to 86,780.20, 130,170.30 and 67,097.20 is: 100,645.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,780.20 : 130,170.30 = 67,097.20 : x
  2. Step 2: Convert to fraction form
    86,780.20/130,170.30 = 67,097.20/x
  3. Step 3: Cross multiply
    86,780.20x = 130,170.30 × 67,097.20
  4. Step 4: Simplify right side
    86,780.20x = 8,734,062,653.16
  5. Step 5: Solve for x
    x = 8,734,062,653.16/86,780.20
  6. Step 6: Final answer
    x = 100,645.80

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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.