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Finding the Fourth Proportional to 185,367.96, 278,073.81 and 138,916.08

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Solution

The fourth proportional to 185,367.96, 278,073.81 and 138,916.08 is: 208,390.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,367.96 : 278,073.81 = 138,916.08 : x
  2. Step 2: Convert to fraction form
    185,367.96/278,073.81 = 138,916.08/x
  3. Step 3: Cross multiply
    185,367.96x = 278,073.81 × 138,916.08
  4. Step 4: Simplify right side
    185,367.96x = 38,628,923,635.86
  5. Step 5: Solve for x
    x = 38,628,923,635.86/185,367.96
  6. Step 6: Final answer
    x = 208,390.51

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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.