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Finding the Fourth Proportional to 101,529.50, 140,091.27 and 65,714.54

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Solution

The fourth proportional to 101,529.50, 140,091.27 and 65,714.54 is: 90,673.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,529.50 : 140,091.27 = 65,714.54 : x
  2. Step 2: Convert to fraction form
    101,529.50/140,091.27 = 65,714.54/x
  3. Step 3: Cross multiply
    101,529.50x = 140,091.27 × 65,714.54
  4. Step 4: Simplify right side
    101,529.50x = 9,206,033,366.07
  5. Step 5: Solve for x
    x = 9,206,033,366.07/101,529.50
  6. Step 6: Final answer
    x = 90,673.48

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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.