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Finding the Fourth Proportional to 106,290.60, 146,691.39 and 79,386.39

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Solution

The fourth proportional to 106,290.60, 146,691.39 and 79,386.39 is: 109,560.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,290.60 : 146,691.39 = 79,386.39 : x
  2. Step 2: Convert to fraction form
    106,290.60/146,691.39 = 79,386.39/x
  3. Step 3: Cross multiply
    106,290.60x = 146,691.39 × 79,386.39
  4. Step 4: Simplify right side
    106,290.60x = 11,645,299,896.18
  5. Step 5: Solve for x
    x = 11,645,299,896.18/106,290.60
  6. Step 6: Final answer
    x = 109,560.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.