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Finding the Fourth Proportional to 101,611.19, 140,221.73 and 55,670.42

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Solution

The fourth proportional to 101,611.19, 140,221.73 and 55,670.42 is: 76,824.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,611.19 : 140,221.73 = 55,670.42 : x
  2. Step 2: Convert to fraction form
    101,611.19/140,221.73 = 55,670.42/x
  3. Step 3: Cross multiply
    101,611.19x = 140,221.73 × 55,670.42
  4. Step 4: Simplify right side
    101,611.19x = 7,806,203,091.96
  5. Step 5: Solve for x
    x = 7,806,203,091.96/101,611.19
  6. Step 6: Final answer
    x = 76,824.24

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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.