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Finding the Fourth Proportional to 101,553.52, 140,124.32 and 65,738.56

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Solution

The fourth proportional to 101,553.52, 140,124.32 and 65,738.56 is: 90,706.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,553.52 : 140,124.32 = 65,738.56 : x
  2. Step 2: Convert to fraction form
    101,553.52/140,124.32 = 65,738.56/x
  3. Step 3: Cross multiply
    101,553.52x = 140,124.32 × 65,738.56
  4. Step 4: Simplify right side
    101,553.52x = 9,211,571,017.78
  5. Step 5: Solve for x
    x = 9,211,571,017.78/101,553.52
  6. Step 6: Final answer
    x = 90,706.57

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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.