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Finding the Fourth Proportional to 158,190.54, 218,302.59 and 86,570.52

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Solution

The fourth proportional to 158,190.54, 218,302.59 and 86,570.52 is: 119,467.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,190.54 : 218,302.59 = 86,570.52 : x
  2. Step 2: Convert to fraction form
    158,190.54/218,302.59 = 86,570.52/x
  3. Step 3: Cross multiply
    158,190.54x = 218,302.59 × 86,570.52
  4. Step 4: Simplify right side
    158,190.54x = 18,898,568,733.65
  5. Step 5: Solve for x
    x = 18,898,568,733.65/158,190.54
  6. Step 6: Final answer
    x = 119,467.12

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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.