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Finding the Fourth Proportional to 101,768.55, 140,348.70 and 63,531.62

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Solution

The fourth proportional to 101,768.55, 140,348.70 and 63,531.62 is: 87,616.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,768.55 : 140,348.70 = 63,531.62 : x
  2. Step 2: Convert to fraction form
    101,768.55/140,348.70 = 63,531.62/x
  3. Step 3: Cross multiply
    101,768.55x = 140,348.70 × 63,531.62
  4. Step 4: Simplify right side
    101,768.55x = 8,916,579,574.15
  5. Step 5: Solve for x
    x = 8,916,579,574.15/101,768.55
  6. Step 6: Final answer
    x = 87,616.26

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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.