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Finding the Fourth Proportional to 136,434.62, 204,274.06 and 69,731.12

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Solution

The fourth proportional to 136,434.62, 204,274.06 and 69,731.12 is: 104,403.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,434.62 : 204,274.06 = 69,731.12 : x
  2. Step 2: Convert to fraction form
    136,434.62/204,274.06 = 69,731.12/x
  3. Step 3: Cross multiply
    136,434.62x = 204,274.06 × 69,731.12
  4. Step 4: Simplify right side
    136,434.62x = 14,244,258,990.75
  5. Step 5: Solve for x
    x = 14,244,258,990.75/136,434.62
  6. Step 6: Final answer
    x = 104,403.55

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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.