Home / 128,122,298.50-192,490,042.62-82,154,229.37

Finding the Fourth Proportional to 128,122,298.50, 192,490,042.62 and 82,154,229.37

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Solution

The fourth proportional to 128,122,298.50, 192,490,042.62 and 82,154,229.37 is: 123,427,937.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,122,298.50 : 192,490,042.62 = 82,154,229.37 : x
  2. Step 2: Convert to fraction form
    128,122,298.50/192,490,042.62 = 82,154,229.37/x
  3. Step 3: Cross multiply
    128,122,298.50x = 192,490,042.62 × 82,154,229.37
  4. Step 4: Simplify right side
    128,122,298.50x = 15,813,871,112,844,558
  5. Step 5: Solve for x
    x = 15,813,871,112,844,558/128,122,298.50
  6. Step 6: Final answer
    x = 123,427,937.98

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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.