Home / 206,282,381.78-309,389,937-60,681,891.80

Finding the Fourth Proportional to 206,282,381.78, 309,389,937 and 60,681,891.80

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Solution

The fourth proportional to 206,282,381.78, 309,389,937 and 60,681,891.80 is: 91,012,943.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,282,381.78 : 309,389,937 = 60,681,891.80 : x
  2. Step 2: Convert to fraction form
    206,282,381.78/309,389,937 = 60,681,891.80/x
  3. Step 3: Cross multiply
    206,282,381.78x = 309,389,937 × 60,681,891.80
  4. Step 4: Simplify right side
    206,282,381.78x = 18,774,366,681,042,816
  5. Step 5: Solve for x
    x = 18,774,366,681,042,816/206,282,381.78
  6. Step 6: Final answer
    x = 91,012,943.13

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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.