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Finding the Fourth Proportional to 138,274.57, 207,479.63 and 49,534.93

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Solution

The fourth proportional to 138,274.57, 207,479.63 and 49,534.93 is: 74,326.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,274.57 : 207,479.63 = 49,534.93 : x
  2. Step 2: Convert to fraction form
    138,274.57/207,479.63 = 49,534.93/x
  3. Step 3: Cross multiply
    138,274.57x = 207,479.63 × 49,534.93
  4. Step 4: Simplify right side
    138,274.57x = 10,277,488,948.48
  5. Step 5: Solve for x
    x = 10,277,488,948.48/138,274.57
  6. Step 6: Final answer
    x = 74,326.67

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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.