Home / 128,553,351.80-192,752,323.58-51,786,721.22

Finding the Fourth Proportional to 128,553,351.80, 192,752,323.58 and 51,786,721.22

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Solution

The fourth proportional to 128,553,351.80, 192,752,323.58 and 51,786,721.22 is: 77,648,779.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,553,351.80 : 192,752,323.58 = 51,786,721.22 : x
  2. Step 2: Convert to fraction form
    128,553,351.80/192,752,323.58 = 51,786,721.22/x
  3. Step 3: Cross multiply
    128,553,351.80x = 192,752,323.58 × 51,786,721.22
  4. Step 4: Simplify right side
    128,553,351.80x = 9,982,010,845,744,692
  5. Step 5: Solve for x
    x = 9,982,010,845,744,692/128,553,351.80
  6. Step 6: Final answer
    x = 77,648,779.33

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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.