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Finding the Fourth Proportional to 106,871.40, 147,483.99 and 66,601.44

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Solution

The fourth proportional to 106,871.40, 147,483.99 and 66,601.44 is: 91,910.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,871.40 : 147,483.99 = 66,601.44 : x
  2. Step 2: Convert to fraction form
    106,871.40/147,483.99 = 66,601.44/x
  3. Step 3: Cross multiply
    106,871.40x = 147,483.99 × 66,601.44
  4. Step 4: Simplify right side
    106,871.40x = 9,822,646,110.95
  5. Step 5: Solve for x
    x = 9,822,646,110.95/106,871.40
  6. Step 6: Final answer
    x = 91,910.90

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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.