Home / 85,536,015.90-128,304,023.85-83,835,404.70

Finding the Fourth Proportional to 85,536,015.90, 128,304,023.85 and 83,835,404.70

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Solution

The fourth proportional to 85,536,015.90, 128,304,023.85 and 83,835,404.70 is: 125,753,107.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,015.90 : 128,304,023.85 = 83,835,404.70 : x
  2. Step 2: Convert to fraction form
    85,536,015.90/128,304,023.85 = 83,835,404.70/x
  3. Step 3: Cross multiply
    85,536,015.90x = 128,304,023.85 × 83,835,404.70
  4. Step 4: Simplify right side
    85,536,015.90x = 10,756,419,764,103,202
  5. Step 5: Solve for x
    x = 10,756,419,764,103,202/85,536,015.90
  6. Step 6: Final answer
    x = 125,753,107.05

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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.