Home / 112,579.20-168,765.12-53,442.72

Finding the Fourth Proportional to 112,579.20, 168,765.12 and 53,442.72

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Solution

The fourth proportional to 112,579.20, 168,765.12 and 53,442.72 is: 80,114.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,579.20 : 168,765.12 = 53,442.72 : x
  2. Step 2: Convert to fraction form
    112,579.20/168,765.12 = 53,442.72/x
  3. Step 3: Cross multiply
    112,579.20x = 168,765.12 × 53,442.72
  4. Step 4: Simplify right side
    112,579.20x = 9,019,267,053.93
  5. Step 5: Solve for x
    x = 9,019,267,053.93/112,579.20
  6. Step 6: Final answer
    x = 80,114.86

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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.