Home / 148,680.12-205,180.08-80,697.68

Finding the Fourth Proportional to 148,680.12, 205,180.08 and 80,697.68

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Solution

The fourth proportional to 148,680.12, 205,180.08 and 80,697.68 is: 111,363.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,680.12 : 205,180.08 = 80,697.68 : x
  2. Step 2: Convert to fraction form
    148,680.12/205,180.08 = 80,697.68/x
  3. Step 3: Cross multiply
    148,680.12x = 205,180.08 × 80,697.68
  4. Step 4: Simplify right side
    148,680.12x = 16,557,556,438.21
  5. Step 5: Solve for x
    x = 16,557,556,438.21/148,680.12
  6. Step 6: Final answer
    x = 111,363.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.