Home / 82,819.20-124,228.80-72,977.70

Finding the Fourth Proportional to 82,819.20, 124,228.80 and 72,977.70

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Solution

The fourth proportional to 82,819.20, 124,228.80 and 72,977.70 is: 109,466.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,819.20 : 124,228.80 = 72,977.70 : x
  2. Step 2: Convert to fraction form
    82,819.20/124,228.80 = 72,977.70/x
  3. Step 3: Cross multiply
    82,819.20x = 124,228.80 × 72,977.70
  4. Step 4: Simplify right side
    82,819.20x = 9,065,932,097.76
  5. Step 5: Solve for x
    x = 9,065,932,097.76/82,819.20
  6. Step 6: Final answer
    x = 109,466.55

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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.