Home / 82,720.20-124,080.30-76,888.20

Finding the Fourth Proportional to 82,720.20, 124,080.30 and 76,888.20

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Solution

The fourth proportional to 82,720.20, 124,080.30 and 76,888.20 is: 115,332.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,720.20 : 124,080.30 = 76,888.20 : x
  2. Step 2: Convert to fraction form
    82,720.20/124,080.30 = 76,888.20/x
  3. Step 3: Cross multiply
    82,720.20x = 124,080.30 × 76,888.20
  4. Step 4: Simplify right side
    82,720.20x = 9,540,310,922.46
  5. Step 5: Solve for x
    x = 9,540,310,922.46/82,720.20
  6. Step 6: Final answer
    x = 115,332.30

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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.