Home / 128,498.02-192,805.35-76,010.02

Finding the Fourth Proportional to 128,498.02, 192,805.35 and 76,010.02

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Solution

The fourth proportional to 128,498.02, 192,805.35 and 76,010.02 is: 114,049.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,498.02 : 192,805.35 = 76,010.02 : x
  2. Step 2: Convert to fraction form
    128,498.02/192,805.35 = 76,010.02/x
  3. Step 3: Cross multiply
    128,498.02x = 192,805.35 × 76,010.02
  4. Step 4: Simplify right side
    128,498.02x = 14,655,138,509.61
  5. Step 5: Solve for x
    x = 14,655,138,509.61/128,498.02
  6. Step 6: Final answer
    x = 114,049.53

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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.