Home / 121,628.20-182,442.30-99,758.20

Finding the Fourth Proportional to 121,628.20, 182,442.30 and 99,758.20

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Solution

The fourth proportional to 121,628.20, 182,442.30 and 99,758.20 is: 149,637.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,628.20 : 182,442.30 = 99,758.20 : x
  2. Step 2: Convert to fraction form
    121,628.20/182,442.30 = 99,758.20/x
  3. Step 3: Cross multiply
    121,628.20x = 182,442.30 × 99,758.20
  4. Step 4: Simplify right side
    121,628.20x = 18,200,115,451.86
  5. Step 5: Solve for x
    x = 18,200,115,451.86/121,628.20
  6. Step 6: Final answer
    x = 149,637.30

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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.