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Finding the Fourth Proportional to 136,349.40, 204,565.78 and 69,836.59

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Solution

The fourth proportional to 136,349.40, 204,565.78 and 69,836.59 is: 104,776.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,349.40 : 204,565.78 = 69,836.59 : x
  2. Step 2: Convert to fraction form
    136,349.40/204,565.78 = 69,836.59/x
  3. Step 3: Cross multiply
    136,349.40x = 204,565.78 × 69,836.59
  4. Step 4: Simplify right side
    136,349.40x = 14,286,175,483.06
  5. Step 5: Solve for x
    x = 14,286,175,483.06/136,349.40
  6. Step 6: Final answer
    x = 104,776.23

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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.