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Finding the Fourth Proportional to 158,297.49, 218,450.32 and 86,677.49

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Solution

The fourth proportional to 158,297.49, 218,450.32 and 86,677.49 is: 119,614.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,297.49 : 218,450.32 = 86,677.49 : x
  2. Step 2: Convert to fraction form
    158,297.49/218,450.32 = 86,677.49/x
  3. Step 3: Cross multiply
    158,297.49x = 218,450.32 × 86,677.49
  4. Step 4: Simplify right side
    158,297.49x = 18,934,725,756.73
  5. Step 5: Solve for x
    x = 18,934,725,756.73/158,297.49
  6. Step 6: Final answer
    x = 119,614.82

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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.