Home / 206,085,872.80-309,128,809.20-125,464,304.80

Finding the Fourth Proportional to 206,085,872.80, 309,128,809.20 and 125,464,304.80

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Solution

The fourth proportional to 206,085,872.80, 309,128,809.20 and 125,464,304.80 is: 188,196,457.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,085,872.80 : 309,128,809.20 = 125,464,304.80 : x
  2. Step 2: Convert to fraction form
    206,085,872.80/309,128,809.20 = 125,464,304.80/x
  3. Step 3: Cross multiply
    206,085,872.80x = 309,128,809.20 × 125,464,304.80
  4. Step 4: Simplify right side
    206,085,872.80x = 38,784,631,139,929,840
  5. Step 5: Solve for x
    x = 38,784,631,139,929,840/206,085,872.80
  6. Step 6: Final answer
    x = 188,196,457.20

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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.