Home / 128,757,947.60-192,633,036.60-83,408,315.60

Finding the Fourth Proportional to 128,757,947.60, 192,633,036.60 and 83,408,315.60

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Solution

The fourth proportional to 128,757,947.60, 192,633,036.60 and 83,408,315.60 is: 124,786,061.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,757,947.60 : 192,633,036.60 = 83,408,315.60 : x
  2. Step 2: Convert to fraction form
    128,757,947.60/192,633,036.60 = 83,408,315.60/x
  3. Step 3: Cross multiply
    128,757,947.60x = 192,633,036.60 × 83,408,315.60
  4. Step 4: Simplify right side
    128,757,947.60x = 16,067,197,111,719,150
  5. Step 5: Solve for x
    x = 16,067,197,111,719,150/128,757,947.60
  6. Step 6: Final answer
    x = 124,786,061.06

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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.