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Finding the Fourth Proportional to 101,544.78, 140,143.95 and 63,813.90

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Solution

The fourth proportional to 101,544.78, 140,143.95 and 63,813.90 is: 88,070.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,544.78 : 140,143.95 = 63,813.90 : x
  2. Step 2: Convert to fraction form
    101,544.78/140,143.95 = 63,813.90/x
  3. Step 3: Cross multiply
    101,544.78x = 140,143.95 × 63,813.90
  4. Step 4: Simplify right side
    101,544.78x = 8,943,132,010.91
  5. Step 5: Solve for x
    x = 8,943,132,010.91/101,544.78
  6. Step 6: Final answer
    x = 88,070.82

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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.