Home / 115,981,800.80-173,972,701.20-77,761,205.60

Finding the Fourth Proportional to 115,981,800.80, 173,972,701.20 and 77,761,205.60

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Solution

The fourth proportional to 115,981,800.80, 173,972,701.20 and 77,761,205.60 is: 116,641,808.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,981,800.80 : 173,972,701.20 = 77,761,205.60 : x
  2. Step 2: Convert to fraction form
    115,981,800.80/173,972,701.20 = 77,761,205.60/x
  3. Step 3: Cross multiply
    115,981,800.80x = 173,972,701.20 × 77,761,205.60
  4. Step 4: Simplify right side
    115,981,800.80x = 13,528,326,986,800,564
  5. Step 5: Solve for x
    x = 13,528,326,986,800,564/115,981,800.80
  6. Step 6: Final answer
    x = 116,641,808.40

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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.