Home / 128,304,069.10-192,456,103.65-115,315,038.70

Finding the Fourth Proportional to 128,304,069.10, 192,456,103.65 and 115,315,038.70

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Solution

The fourth proportional to 128,304,069.10, 192,456,103.65 and 115,315,038.70 is: 172,972,558.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,069.10 : 192,456,103.65 = 115,315,038.70 : x
  2. Step 2: Convert to fraction form
    128,304,069.10/192,456,103.65 = 115,315,038.70/x
  3. Step 3: Cross multiply
    128,304,069.10x = 192,456,103.65 × 115,315,038.70
  4. Step 4: Simplify right side
    128,304,069.10x = 22,193,083,040,450,964
  5. Step 5: Solve for x
    x = 22,193,083,040,450,964/128,304,069.10
  6. Step 6: Final answer
    x = 172,972,558.05

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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.