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Finding the Fourth Proportional to 101,601.88, 140,211.72 and 56,280.56

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Solution

The fourth proportional to 101,601.88, 140,211.72 and 56,280.56 is: 77,667.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,601.88 : 140,211.72 = 56,280.56 : x
  2. Step 2: Convert to fraction form
    101,601.88/140,211.72 = 56,280.56/x
  3. Step 3: Cross multiply
    101,601.88x = 140,211.72 × 56,280.56
  4. Step 4: Simplify right side
    101,601.88x = 7,891,194,120.16
  5. Step 5: Solve for x
    x = 7,891,194,120.16/101,601.88
  6. Step 6: Final answer
    x = 77,667.80

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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.