Home / 128,553,356.80-192,752,331.08-51,786,726.22

Finding the Fourth Proportional to 128,553,356.80, 192,752,331.08 and 51,786,726.22

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Solution

The fourth proportional to 128,553,356.80, 192,752,331.08 and 51,786,726.22 is: 77,648,786.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,553,356.80 : 192,752,331.08 = 51,786,726.22 : x
  2. Step 2: Convert to fraction form
    128,553,356.80/192,752,331.08 = 51,786,726.22/x
  3. Step 3: Cross multiply
    128,553,356.80x = 192,752,331.08 × 51,786,726.22
  4. Step 4: Simplify right side
    128,553,356.80x = 9,982,012,197,906,758
  5. Step 5: Solve for x
    x = 9,982,012,197,906,758/128,553,356.80
  6. Step 6: Final answer
    x = 77,648,786.83

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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.