Home / 8,128,001.80-12,192,002.70-7,381,505.80

Finding the Fourth Proportional to 8,128,001.80, 12,192,002.70 and 7,381,505.80

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Solution

The fourth proportional to 8,128,001.80, 12,192,002.70 and 7,381,505.80 is: 11,072,258.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128,001.80 : 12,192,002.70 = 7,381,505.80 : x
  2. Step 2: Convert to fraction form
    8,128,001.80/12,192,002.70 = 7,381,505.80/x
  3. Step 3: Cross multiply
    8,128,001.80x = 12,192,002.70 × 7,381,505.80
  4. Step 4: Simplify right side
    8,128,001.80x = 89,995,338,643,665.66
  5. Step 5: Solve for x
    x = 89,995,338,643,665.66/8,128,001.80
  6. Step 6: Final answer
    x = 11,072,258.70

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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.