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Finding the Fourth Proportional to 115,211, 158,991.18 and 62,219

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Solution

The fourth proportional to 115,211, 158,991.18 and 62,219 is: 85,862.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,211 : 158,991.18 = 62,219 : x
  2. Step 2: Convert to fraction form
    115,211/158,991.18 = 62,219/x
  3. Step 3: Cross multiply
    115,211x = 158,991.18 × 62,219
  4. Step 4: Simplify right side
    115,211x = 9,892,272,228.42
  5. Step 5: Solve for x
    x = 9,892,272,228.42/115,211
  6. Step 6: Final answer
    x = 85,862.22

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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.