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Finding the Fourth Proportional to 158,073.39, 218,138.54 and 86,451.84

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Solution

The fourth proportional to 158,073.39, 218,138.54 and 86,451.84 is: 119,302.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,073.39 : 218,138.54 = 86,451.84 : x
  2. Step 2: Convert to fraction form
    158,073.39/218,138.54 = 86,451.84/x
  3. Step 3: Cross multiply
    158,073.39x = 218,138.54 × 86,451.84
  4. Step 4: Simplify right side
    158,073.39x = 18,858,477,725.65
  5. Step 5: Solve for x
    x = 18,858,477,725.65/158,073.39
  6. Step 6: Final answer
    x = 119,302.04

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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.