Home / 86,920.60-130,539.30-76,034.20

Finding the Fourth Proportional to 86,920.60, 130,539.30 and 76,034.20

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Solution

The fourth proportional to 86,920.60, 130,539.30 and 76,034.20 is: 114,189.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,920.60 : 130,539.30 = 76,034.20 : x
  2. Step 2: Convert to fraction form
    86,920.60/130,539.30 = 76,034.20/x
  3. Step 3: Cross multiply
    86,920.60x = 130,539.30 × 76,034.20
  4. Step 4: Simplify right side
    86,920.60x = 9,925,451,244.06
  5. Step 5: Solve for x
    x = 9,925,451,244.06/86,920.60
  6. Step 6: Final answer
    x = 114,189.86

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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.