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Finding the Fourth Proportional to 101,869.02, 140,674.98 and 65,634.08

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Solution

The fourth proportional to 101,869.02, 140,674.98 and 65,634.08 is: 90,636.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,869.02 : 140,674.98 = 65,634.08 : x
  2. Step 2: Convert to fraction form
    101,869.02/140,674.98 = 65,634.08/x
  3. Step 3: Cross multiply
    101,869.02x = 140,674.98 × 65,634.08
  4. Step 4: Simplify right side
    101,869.02x = 9,233,072,375.55
  5. Step 5: Solve for x
    x = 9,233,072,375.55/101,869.02
  6. Step 6: Final answer
    x = 90,636.70

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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.