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Finding the Fourth Proportional to 101,682.98, 140,275.05 and 63,978.02

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Solution

The fourth proportional to 101,682.98, 140,275.05 and 63,978.02 is: 88,259.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,682.98 : 140,275.05 = 63,978.02 : x
  2. Step 2: Convert to fraction form
    101,682.98/140,275.05 = 63,978.02/x
  3. Step 3: Cross multiply
    101,682.98x = 140,275.05 × 63,978.02
  4. Step 4: Simplify right side
    101,682.98x = 8,974,519,954.40
  5. Step 5: Solve for x
    x = 8,974,519,954.40/101,682.98
  6. Step 6: Final answer
    x = 88,259.80

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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.