Home / 82,823.10-124,234.65-78,546.30

Finding the Fourth Proportional to 82,823.10, 124,234.65 and 78,546.30

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Solution

The fourth proportional to 82,823.10, 124,234.65 and 78,546.30 is: 117,819.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,823.10 : 124,234.65 = 78,546.30 : x
  2. Step 2: Convert to fraction form
    82,823.10/124,234.65 = 78,546.30/x
  3. Step 3: Cross multiply
    82,823.10x = 124,234.65 × 78,546.30
  4. Step 4: Simplify right side
    82,823.10x = 9,758,172,089.30
  5. Step 5: Solve for x
    x = 9,758,172,089.30/82,823.10
  6. Step 6: Final answer
    x = 117,819.45

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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.