Home / 128,335.78-192,367.91-48,339.13

Finding the Fourth Proportional to 128,335.78, 192,367.91 and 48,339.13

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Solution

The fourth proportional to 128,335.78, 192,367.91 and 48,339.13 is: 72,457.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,335.78 : 192,367.91 = 48,339.13 : x
  2. Step 2: Convert to fraction form
    128,335.78/192,367.91 = 48,339.13/x
  3. Step 3: Cross multiply
    128,335.78x = 192,367.91 × 48,339.13
  4. Step 4: Simplify right side
    128,335.78x = 9,298,897,049.25
  5. Step 5: Solve for x
    x = 9,298,897,049.25/128,335.78
  6. Step 6: Final answer
    x = 72,457.56

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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.