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Finding the Fourth Proportional to 137,124.20, 205,701.42 and 43,608.08

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Solution

The fourth proportional to 137,124.20, 205,701.42 and 43,608.08 is: 65,416.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,124.20 : 205,701.42 = 43,608.08 : x
  2. Step 2: Convert to fraction form
    137,124.20/205,701.42 = 43,608.08/x
  3. Step 3: Cross multiply
    137,124.20x = 205,701.42 × 43,608.08
  4. Step 4: Simplify right side
    137,124.20x = 8,970,243,979.47
  5. Step 5: Solve for x
    x = 8,970,243,979.47/137,124.20
  6. Step 6: Final answer
    x = 65,416.93

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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.