Home / 418,119,021.72-627,044,261.70-137,936,954.15

Finding the Fourth Proportional to 418,119,021.72, 627,044,261.70 and 137,936,954.15

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Solution

The fourth proportional to 418,119,021.72, 627,044,261.70 and 137,936,954.15 is: 206,861,135.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,119,021.72 : 627,044,261.70 = 137,936,954.15 : x
  2. Step 2: Convert to fraction form
    418,119,021.72/627,044,261.70 = 137,936,954.15/x
  3. Step 3: Cross multiply
    418,119,021.72x = 627,044,261.70 × 137,936,954.15
  4. Step 4: Simplify right side
    418,119,021.72x = 86,492,575,572,998,288
  5. Step 5: Solve for x
    x = 86,492,575,572,998,288/418,119,021.72
  6. Step 6: Final answer
    x = 206,861,135.42

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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.