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Finding the Fourth Proportional to 158,387.96, 218,400.18 and 100,936.22

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Solution

The fourth proportional to 158,387.96, 218,400.18 and 100,936.22 is: 139,180.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,387.96 : 218,400.18 = 100,936.22 : x
  2. Step 2: Convert to fraction form
    158,387.96/218,400.18 = 100,936.22/x
  3. Step 3: Cross multiply
    158,387.96x = 218,400.18 × 100,936.22
  4. Step 4: Simplify right side
    158,387.96x = 22,044,487,524.52
  5. Step 5: Solve for x
    x = 22,044,487,524.52/158,387.96
  6. Step 6: Final answer
    x = 139,180.33

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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.