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Finding the Fourth Proportional to 101,768.72, 140,412.12 and 65,960.24

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Solution

The fourth proportional to 101,768.72, 140,412.12 and 65,960.24 is: 91,006.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,768.72 : 140,412.12 = 65,960.24 : x
  2. Step 2: Convert to fraction form
    101,768.72/140,412.12 = 65,960.24/x
  3. Step 3: Cross multiply
    101,768.72x = 140,412.12 × 65,960.24
  4. Step 4: Simplify right side
    101,768.72x = 9,261,617,134.11
  5. Step 5: Solve for x
    x = 9,261,617,134.11/101,768.72
  6. Step 6: Final answer
    x = 91,006.52

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1.5x scale

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.