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Finding the Fourth Proportional to 120,100.80, 179,632.80 and 101,438.40

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Solution

The fourth proportional to 120,100.80, 179,632.80 and 101,438.40 is: 151,719.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,100.80 : 179,632.80 = 101,438.40 : x
  2. Step 2: Convert to fraction form
    120,100.80/179,632.80 = 101,438.40/x
  3. Step 3: Cross multiply
    120,100.80x = 179,632.80 × 101,438.40
  4. Step 4: Simplify right side
    120,100.80x = 18,221,663,819.52
  5. Step 5: Solve for x
    x = 18,221,663,819.52/120,100.80
  6. Step 6: Final answer
    x = 151,719.75

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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.