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Finding the Fourth Proportional to 137,605, 206,417.22 and 54,499

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Solution

The fourth proportional to 137,605, 206,417.22 and 54,499 is: 81,752.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,605 : 206,417.22 = 54,499 : x
  2. Step 2: Convert to fraction form
    137,605/206,417.22 = 54,499/x
  3. Step 3: Cross multiply
    137,605x = 206,417.22 × 54,499
  4. Step 4: Simplify right side
    137,605x = 11,249,532,072.78
  5. Step 5: Solve for x
    x = 11,249,532,072.78/137,605
  6. Step 6: Final answer
    x = 81,752.35

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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.