Home / 128,500,691.94-192,821,760.63-55,718,031.78

Finding the Fourth Proportional to 128,500,691.94, 192,821,760.63 and 55,718,031.78

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Solution

The fourth proportional to 128,500,691.94, 192,821,760.63 and 55,718,031.78 is: 83,607,713.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,500,691.94 : 192,821,760.63 = 55,718,031.78 : x
  2. Step 2: Convert to fraction form
    128,500,691.94/192,821,760.63 = 55,718,031.78/x
  3. Step 3: Cross multiply
    128,500,691.94x = 192,821,760.63 × 55,718,031.78
  4. Step 4: Simplify right side
    128,500,691.94x = 10,743,648,986,657,892
  5. Step 5: Solve for x
    x = 10,743,648,986,657,892/128,500,691.94
  6. Step 6: Final answer
    x = 83,607,713.11

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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.