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Finding the Fourth Proportional to 158,545.26, 218,792.52 and 86,923.80

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Solution

The fourth proportional to 158,545.26, 218,792.52 and 86,923.80 is: 119,954.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,545.26 : 218,792.52 = 86,923.80 : x
  2. Step 2: Convert to fraction form
    158,545.26/218,792.52 = 86,923.80/x
  3. Step 3: Cross multiply
    158,545.26x = 218,792.52 × 86,923.80
  4. Step 4: Simplify right side
    158,545.26x = 19,018,277,249.98
  5. Step 5: Solve for x
    x = 19,018,277,249.98/158,545.26
  6. Step 6: Final answer
    x = 119,954.88

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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.