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Finding the Fourth Proportional to 106,269.90, 146,723.03 and 66,043.68

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Solution

The fourth proportional to 106,269.90, 146,723.03 and 66,043.68 is: 91,184.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,269.90 : 146,723.03 = 66,043.68 : x
  2. Step 2: Convert to fraction form
    106,269.90/146,723.03 = 66,043.68/x
  3. Step 3: Cross multiply
    106,269.90x = 146,723.03 × 66,043.68
  4. Step 4: Simplify right side
    106,269.90x = 9,690,128,841.95
  5. Step 5: Solve for x
    x = 9,690,128,841.95/106,269.90
  6. Step 6: Final answer
    x = 91,184.13

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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.