Home / 128,160.72-192,094.74-80,151.48

Finding the Fourth Proportional to 128,160.72, 192,094.74 and 80,151.48

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Solution

The fourth proportional to 128,160.72, 192,094.74 and 80,151.48 is: 120,135.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,160.72 : 192,094.74 = 80,151.48 : x
  2. Step 2: Convert to fraction form
    128,160.72/192,094.74 = 80,151.48/x
  3. Step 3: Cross multiply
    128,160.72x = 192,094.74 × 80,151.48
  4. Step 4: Simplify right side
    128,160.72x = 15,396,677,711.22
  5. Step 5: Solve for x
    x = 15,396,677,711.22/128,160.72
  6. Step 6: Final answer
    x = 120,135.70

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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.