Home / 82,775.30-124,243.14-78,279.80

Finding the Fourth Proportional to 82,775.30, 124,243.14 and 78,279.80

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Solution

The fourth proportional to 82,775.30, 124,243.14 and 78,279.80 is: 117,495.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,775.30 : 124,243.14 = 78,279.80 : x
  2. Step 2: Convert to fraction form
    82,775.30/124,243.14 = 78,279.80/x
  3. Step 3: Cross multiply
    82,775.30x = 124,243.14 × 78,279.80
  4. Step 4: Simplify right side
    82,775.30x = 9,725,728,150.57
  5. Step 5: Solve for x
    x = 9,725,728,150.57/82,775.30
  6. Step 6: Final answer
    x = 117,495.53

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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.