Home / 140,085.20-193,074.12-120,178.64

Finding the Fourth Proportional to 140,085.20, 193,074.12 and 120,178.64

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Solution

The fourth proportional to 140,085.20, 193,074.12 and 120,178.64 is: 165,637.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,085.20 : 193,074.12 = 120,178.64 : x
  2. Step 2: Convert to fraction form
    140,085.20/193,074.12 = 120,178.64/x
  3. Step 3: Cross multiply
    140,085.20x = 193,074.12 × 120,178.64
  4. Step 4: Simplify right side
    140,085.20x = 23,203,385,160.80
  5. Step 5: Solve for x
    x = 23,203,385,160.80/140,085.20
  6. Step 6: Final answer
    x = 165,637.66

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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.