Home / 82,855.40-124,283.10-76,440.20

Finding the Fourth Proportional to 82,855.40, 124,283.10 and 76,440.20

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Solution

The fourth proportional to 82,855.40, 124,283.10 and 76,440.20 is: 114,660.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,855.40 : 124,283.10 = 76,440.20 : x
  2. Step 2: Convert to fraction form
    82,855.40/124,283.10 = 76,440.20/x
  3. Step 3: Cross multiply
    82,855.40x = 124,283.10 × 76,440.20
  4. Step 4: Simplify right side
    82,855.40x = 9,500,225,020.62
  5. Step 5: Solve for x
    x = 9,500,225,020.62/82,855.40
  6. Step 6: Final answer
    x = 114,660.30

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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.