Home / 84,815.70-127,223.55-79,977.30

Finding the Fourth Proportional to 84,815.70, 127,223.55 and 79,977.30

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Solution

The fourth proportional to 84,815.70, 127,223.55 and 79,977.30 is: 119,965.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,815.70 : 127,223.55 = 79,977.30 : x
  2. Step 2: Convert to fraction form
    84,815.70/127,223.55 = 79,977.30/x
  3. Step 3: Cross multiply
    84,815.70x = 127,223.55 × 79,977.30
  4. Step 4: Simplify right side
    84,815.70x = 10,174,996,025.42
  5. Step 5: Solve for x
    x = 10,174,996,025.42/84,815.70
  6. Step 6: Final answer
    x = 119,965.95

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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.