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Finding the Fourth Proportional to 158,228.62, 218,355.81 and 86,613.21

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Solution

The fourth proportional to 158,228.62, 218,355.81 and 86,613.21 is: 119,526.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,228.62 : 218,355.81 = 86,613.21 : x
  2. Step 2: Convert to fraction form
    158,228.62/218,355.81 = 86,613.21/x
  3. Step 3: Cross multiply
    158,228.62x = 218,355.81 × 86,613.21
  4. Step 4: Simplify right side
    158,228.62x = 18,912,497,626.25
  5. Step 5: Solve for x
    x = 18,912,497,626.25/158,228.62
  6. Step 6: Final answer
    x = 119,526.40

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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.