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Finding the Fourth Proportional to 138,419.46, 207,609.48 and 43,637.34

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Solution

The fourth proportional to 138,419.46, 207,609.48 and 43,637.34 is: 65,449.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,419.46 : 207,609.48 = 43,637.34 : x
  2. Step 2: Convert to fraction form
    138,419.46/207,609.48 = 43,637.34/x
  3. Step 3: Cross multiply
    138,419.46x = 207,609.48 × 43,637.34
  4. Step 4: Simplify right side
    138,419.46x = 9,059,525,465.98
  5. Step 5: Solve for x
    x = 9,059,525,465.98/138,419.46
  6. Step 6: Final answer
    x = 65,449.80

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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.