Home / 86,844.20-130,266.30-76,821.80

Finding the Fourth Proportional to 86,844.20, 130,266.30 and 76,821.80

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Solution

The fourth proportional to 86,844.20, 130,266.30 and 76,821.80 is: 115,232.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,844.20 : 130,266.30 = 76,821.80 : x
  2. Step 2: Convert to fraction form
    86,844.20/130,266.30 = 76,821.80/x
  3. Step 3: Cross multiply
    86,844.20x = 130,266.30 × 76,821.80
  4. Step 4: Simplify right side
    86,844.20x = 10,007,291,645.34
  5. Step 5: Solve for x
    x = 10,007,291,645.34/86,844.20
  6. Step 6: Final answer
    x = 115,232.70

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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.