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Finding the Fourth Proportional to 158,611.42, 218,883.90 and 86,992.84

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Solution

The fourth proportional to 158,611.42, 218,883.90 and 86,992.84 is: 120,050.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,611.42 : 218,883.90 = 86,992.84 : x
  2. Step 2: Convert to fraction form
    158,611.42/218,883.90 = 86,992.84/x
  3. Step 3: Cross multiply
    158,611.42x = 218,883.90 × 86,992.84
  4. Step 4: Simplify right side
    158,611.42x = 19,041,332,091.28
  5. Step 5: Solve for x
    x = 19,041,332,091.28/158,611.42
  6. Step 6: Final answer
    x = 120,050.20

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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.