Home / 140,645.12-194,088.76-80,214.20

Finding the Fourth Proportional to 140,645.12, 194,088.76 and 80,214.20

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Solution

The fourth proportional to 140,645.12, 194,088.76 and 80,214.20 is: 110,694.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,645.12 : 194,088.76 = 80,214.20 : x
  2. Step 2: Convert to fraction form
    140,645.12/194,088.76 = 80,214.20/x
  3. Step 3: Cross multiply
    140,645.12x = 194,088.76 × 80,214.20
  4. Step 4: Simplify right side
    140,645.12x = 15,568,674,612.39
  5. Step 5: Solve for x
    x = 15,568,674,612.39/140,645.12
  6. Step 6: Final answer
    x = 110,694.74

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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.