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Finding the Fourth Proportional to 155,181, 214,149.81 and 88,113

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Solution

The fourth proportional to 155,181, 214,149.81 and 88,113 is: 121,595.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,181 : 214,149.81 = 88,113 : x
  2. Step 2: Convert to fraction form
    155,181/214,149.81 = 88,113/x
  3. Step 3: Cross multiply
    155,181x = 214,149.81 × 88,113
  4. Step 4: Simplify right side
    155,181x = 18,869,382,208.53
  5. Step 5: Solve for x
    x = 18,869,382,208.53/155,181
  6. Step 6: Final answer
    x = 121,595.96

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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.