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Finding the Fourth Proportional to 101,563.68, 140,134.68 and 65,284.08

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Solution

The fourth proportional to 101,563.68, 140,134.68 and 65,284.08 is: 90,077.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,563.68 : 140,134.68 = 65,284.08 : x
  2. Step 2: Convert to fraction form
    101,563.68/140,134.68 = 65,284.08/x
  3. Step 3: Cross multiply
    101,563.68x = 140,134.68 × 65,284.08
  4. Step 4: Simplify right side
    101,563.68x = 9,148,563,659.89
  5. Step 5: Solve for x
    x = 9,148,563,659.89/101,563.68
  6. Step 6: Final answer
    x = 90,077.12

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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.