Home / 80,089.43-120,133.91-20,925.16

Finding the Fourth Proportional to 80,089.43, 120,133.91 and 20,925.16

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Solution

The fourth proportional to 80,089.43, 120,133.91 and 20,925.16 is: 31,387.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,089.43 : 120,133.91 = 20,925.16 : x
  2. Step 2: Convert to fraction form
    80,089.43/120,133.91 = 20,925.16/x
  3. Step 3: Cross multiply
    80,089.43x = 120,133.91 × 20,925.16
  4. Step 4: Simplify right side
    80,089.43x = 2,513,821,040.15
  5. Step 5: Solve for x
    x = 2,513,821,040.15/80,089.43
  6. Step 6: Final answer
    x = 31,387.68

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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.