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Finding the Fourth Proportional to 138,147.50, 207,255.28 and 44,653.26

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Solution

The fourth proportional to 138,147.50, 207,255.28 and 44,653.26 is: 66,990.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,147.50 : 207,255.28 = 44,653.26 : x
  2. Step 2: Convert to fraction form
    138,147.50/207,255.28 = 44,653.26/x
  3. Step 3: Cross multiply
    138,147.50x = 207,255.28 × 44,653.26
  4. Step 4: Simplify right side
    138,147.50x = 9,254,623,904.21
  5. Step 5: Solve for x
    x = 9,254,623,904.21/138,147.50
  6. Step 6: Final answer
    x = 66,990.89

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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.