Home / 80,117.24-120,165.39-20,957.45

Finding the Fourth Proportional to 80,117.24, 120,165.39 and 20,957.45

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Solution

The fourth proportional to 80,117.24, 120,165.39 and 20,957.45 is: 31,433.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,117.24 : 120,165.39 = 20,957.45 : x
  2. Step 2: Convert to fraction form
    80,117.24/120,165.39 = 20,957.45/x
  3. Step 3: Cross multiply
    80,117.24x = 120,165.39 × 20,957.45
  4. Step 4: Simplify right side
    80,117.24x = 2,518,359,551.83
  5. Step 5: Solve for x
    x = 2,518,359,551.83/80,117.24
  6. Step 6: Final answer
    x = 31,433.43

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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.