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Finding the Fourth Proportional to 155,169.86, 214,134.66 and 88,101.86

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Solution

The fourth proportional to 155,169.86, 214,134.66 and 88,101.86 is: 121,580.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,169.86 : 214,134.66 = 88,101.86 : x
  2. Step 2: Convert to fraction form
    155,169.86/214,134.66 = 88,101.86/x
  3. Step 3: Cross multiply
    155,169.86x = 214,134.66 × 88,101.86
  4. Step 4: Simplify right side
    155,169.86x = 18,865,661,836.47
  5. Step 5: Solve for x
    x = 18,865,661,836.47/155,169.86
  6. Step 6: Final answer
    x = 121,580.71

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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.