Home / 128,260.20-192,390.30-104,932.20

Finding the Fourth Proportional to 128,260.20, 192,390.30 and 104,932.20

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Solution

The fourth proportional to 128,260.20, 192,390.30 and 104,932.20 is: 157,398.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,260.20 : 192,390.30 = 104,932.20 : x
  2. Step 2: Convert to fraction form
    128,260.20/192,390.30 = 104,932.20/x
  3. Step 3: Cross multiply
    128,260.20x = 192,390.30 × 104,932.20
  4. Step 4: Simplify right side
    128,260.20x = 20,187,937,437.66
  5. Step 5: Solve for x
    x = 20,187,937,437.66/128,260.20
  6. Step 6: Final answer
    x = 157,398.30

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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.