Home / 128,304,002.40-192,456,003.60-70,766,656.80

Finding the Fourth Proportional to 128,304,002.40, 192,456,003.60 and 70,766,656.80

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Solution

The fourth proportional to 128,304,002.40, 192,456,003.60 and 70,766,656.80 is: 106,149,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,002.40 : 192,456,003.60 = 70,766,656.80 : x
  2. Step 2: Convert to fraction form
    128,304,002.40/192,456,003.60 = 70,766,656.80/x
  3. Step 3: Cross multiply
    128,304,002.40x = 192,456,003.60 × 70,766,656.80
  4. Step 4: Simplify right side
    128,304,002.40x = 13,619,467,955,860,764
  5. Step 5: Solve for x
    x = 13,619,467,955,860,764/128,304,002.40
  6. Step 6: Final answer
    x = 106,149,985.20

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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.