Home / 148,626,936.90-205,103,960.19-81,647,016.30

Finding the Fourth Proportional to 148,626,936.90, 205,103,960.19 and 81,647,016.30

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Solution

The fourth proportional to 148,626,936.90, 205,103,960.19 and 81,647,016.30 is: 112,672,216.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,626,936.90 : 205,103,960.19 = 81,647,016.30 : x
  2. Step 2: Convert to fraction form
    148,626,936.90/205,103,960.19 = 81,647,016.30/x
  3. Step 3: Cross multiply
    148,626,936.90x = 205,103,960.19 × 81,647,016.30
  4. Step 4: Simplify right side
    148,626,936.90x = 16,746,126,380,827,480
  5. Step 5: Solve for x
    x = 16,746,126,380,827,480/148,626,936.90
  6. Step 6: Final answer
    x = 112,672,216.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.