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Finding the Fourth Proportional to 82,810.80, 124,216.20 and 74,500.20

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Solution

The fourth proportional to 82,810.80, 124,216.20 and 74,500.20 is: 111,750.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,810.80 : 124,216.20 = 74,500.20 : x
  2. Step 2: Convert to fraction form
    82,810.80/124,216.20 = 74,500.20/x
  3. Step 3: Cross multiply
    82,810.80x = 124,216.20 × 74,500.20
  4. Step 4: Simplify right side
    82,810.80x = 9,254,131,743.24
  5. Step 5: Solve for x
    x = 9,254,131,743.24/82,810.80
  6. Step 6: Final answer
    x = 111,750.30

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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.