Home / 128,151.30-192,212.36-34,649.76

Finding the Fourth Proportional to 128,151.30, 192,212.36 and 34,649.76

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Solution

The fourth proportional to 128,151.30, 192,212.36 and 34,649.76 is: 51,970.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,151.30 : 192,212.36 = 34,649.76 : x
  2. Step 2: Convert to fraction form
    128,151.30/192,212.36 = 34,649.76/x
  3. Step 3: Cross multiply
    128,151.30x = 192,212.36 × 34,649.76
  4. Step 4: Simplify right side
    128,151.30x = 6,660,112,143.03
  5. Step 5: Solve for x
    x = 6,660,112,143.03/128,151.30
  6. Step 6: Final answer
    x = 51,970.70

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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.