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Finding the Fourth Proportional to 158,146.22, 218,239.84 and 86,525.21

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Solution

The fourth proportional to 158,146.22, 218,239.84 and 86,525.21 is: 119,403.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,146.22 : 218,239.84 = 86,525.21 : x
  2. Step 2: Convert to fraction form
    158,146.22/218,239.84 = 86,525.21/x
  3. Step 3: Cross multiply
    158,146.22x = 218,239.84 × 86,525.21
  4. Step 4: Simplify right side
    158,146.22x = 18,883,247,986.37
  5. Step 5: Solve for x
    x = 18,883,247,986.37/158,146.22
  6. Step 6: Final answer
    x = 119,403.73

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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.