Home / 131,328,019.20-196,992,028.80-129,536,428.80

Finding the Fourth Proportional to 131,328,019.20, 196,992,028.80 and 129,536,428.80

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Solution

The fourth proportional to 131,328,019.20, 196,992,028.80 and 129,536,428.80 is: 194,304,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,328,019.20 : 196,992,028.80 = 129,536,428.80 : x
  2. Step 2: Convert to fraction form
    131,328,019.20/196,992,028.80 = 129,536,428.80/x
  3. Step 3: Cross multiply
    131,328,019.20x = 196,992,028.80 × 129,536,428.80
  4. Step 4: Simplify right side
    131,328,019.20x = 25,517,643,912,818,752
  5. Step 5: Solve for x
    x = 25,517,643,912,818,752/131,328,019.20
  6. Step 6: Final answer
    x = 194,304,643.20

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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.