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Finding the Fourth Proportional to 137,356.90, 206,034.63 and 43,860.58

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Solution

The fourth proportional to 137,356.90, 206,034.63 and 43,860.58 is: 65,790.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,356.90 : 206,034.63 = 43,860.58 : x
  2. Step 2: Convert to fraction form
    137,356.90/206,034.63 = 43,860.58/x
  3. Step 3: Cross multiply
    137,356.90x = 206,034.63 × 43,860.58
  4. Step 4: Simplify right side
    137,356.90x = 9,036,798,371.89
  5. Step 5: Solve for x
    x = 9,036,798,371.89/137,356.90
  6. Step 6: Final answer
    x = 65,790.64

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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.