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Finding the Fourth Proportional to 115,190.92, 172,881.42 and 89,054.92

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Solution

The fourth proportional to 115,190.92, 172,881.42 and 89,054.92 is: 133,655.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,190.92 : 172,881.42 = 89,054.92 : x
  2. Step 2: Convert to fraction form
    115,190.92/172,881.42 = 89,054.92/x
  3. Step 3: Cross multiply
    115,190.92x = 172,881.42 × 89,054.92
  4. Step 4: Simplify right side
    115,190.92x = 15,395,941,027.59
  5. Step 5: Solve for x
    x = 15,395,941,027.59/115,190.92
  6. Step 6: Final answer
    x = 133,655.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.