Home / 128,304,085.60-192,288,166.80-51,564,296.80

Finding the Fourth Proportional to 128,304,085.60, 192,288,166.80 and 51,564,296.80

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Solution

The fourth proportional to 128,304,085.60, 192,288,166.80 and 51,564,296.80 is: 77,278,942.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,085.60 : 192,288,166.80 = 51,564,296.80 : x
  2. Step 2: Convert to fraction form
    128,304,085.60/192,288,166.80 = 51,564,296.80/x
  3. Step 3: Cross multiply
    128,304,085.60x = 192,288,166.80 × 51,564,296.80
  4. Step 4: Simplify right side
    128,304,085.60x = 9,915,204,104,003,106
  5. Step 5: Solve for x
    x = 9,915,204,104,003,106/128,304,085.60
  6. Step 6: Final answer
    x = 77,278,942.89

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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.