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Finding the Fourth Proportional to 115,231.60, 172,944.60 and 56,117.80

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Solution

The fourth proportional to 115,231.60, 172,944.60 and 56,117.80 is: 84,224.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,231.60 : 172,944.60 = 56,117.80 : x
  2. Step 2: Convert to fraction form
    115,231.60/172,944.60 = 56,117.80/x
  3. Step 3: Cross multiply
    115,231.60x = 172,944.60 × 56,117.80
  4. Step 4: Simplify right side
    115,231.60x = 9,705,270,473.88
  5. Step 5: Solve for x
    x = 9,705,270,473.88/115,231.60
  6. Step 6: Final answer
    x = 84,224.04

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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.