Home / 128,304,072.30-192,456,108.45-56,640,456.30

Finding the Fourth Proportional to 128,304,072.30, 192,456,108.45 and 56,640,456.30

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Solution

The fourth proportional to 128,304,072.30, 192,456,108.45 and 56,640,456.30 is: 84,960,684.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,072.30 : 192,456,108.45 = 56,640,456.30 : x
  2. Step 2: Convert to fraction form
    128,304,072.30/192,456,108.45 = 56,640,456.30/x
  3. Step 3: Cross multiply
    128,304,072.30x = 192,456,108.45 × 56,640,456.30
  4. Step 4: Simplify right side
    128,304,072.30x = 10,900,801,800,330,284
  5. Step 5: Solve for x
    x = 10,900,801,800,330,284/128,304,072.30
  6. Step 6: Final answer
    x = 84,960,684.45

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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.