Home / 128,165.12-192,247.68-49,316.48

Finding the Fourth Proportional to 128,165.12, 192,247.68 and 49,316.48

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Solution

The fourth proportional to 128,165.12, 192,247.68 and 49,316.48 is: 73,974.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,165.12 : 192,247.68 = 49,316.48 : x
  2. Step 2: Convert to fraction form
    128,165.12/192,247.68 = 49,316.48/x
  3. Step 3: Cross multiply
    128,165.12x = 192,247.68 × 49,316.48
  4. Step 4: Simplify right side
    128,165.12x = 9,480,978,865.77
  5. Step 5: Solve for x
    x = 9,480,978,865.77/128,165.12
  6. Step 6: Final answer
    x = 73,974.72

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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.