Home / 128,268.60-192,402.90-45,151.80

Finding the Fourth Proportional to 128,268.60, 192,402.90 and 45,151.80

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Solution

The fourth proportional to 128,268.60, 192,402.90 and 45,151.80 is: 67,727.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,268.60 : 192,402.90 = 45,151.80 : x
  2. Step 2: Convert to fraction form
    128,268.60/192,402.90 = 45,151.80/x
  3. Step 3: Cross multiply
    128,268.60x = 192,402.90 × 45,151.80
  4. Step 4: Simplify right side
    128,268.60x = 8,687,337,260.22
  5. Step 5: Solve for x
    x = 8,687,337,260.22/128,268.60
  6. Step 6: Final answer
    x = 67,727.70

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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.