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Finding the Fourth Proportional to 155,168.86, 214,133.28 and 88,100.86

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Solution

The fourth proportional to 155,168.86, 214,133.28 and 88,100.86 is: 121,579.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,168.86 : 214,133.28 = 88,100.86 : x
  2. Step 2: Convert to fraction form
    155,168.86/214,133.28 = 88,100.86/x
  3. Step 3: Cross multiply
    155,168.86x = 214,133.28 × 88,100.86
  4. Step 4: Simplify right side
    155,168.86x = 18,865,326,122.62
  5. Step 5: Solve for x
    x = 18,865,326,122.62/155,168.86
  6. Step 6: Final answer
    x = 121,579.33

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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.