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Finding the Fourth Proportional to 155,558.20, 232,991.70 and 127,910.20

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Solution

The fourth proportional to 155,558.20, 232,991.70 and 127,910.20 is: 191,581.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,558.20 : 232,991.70 = 127,910.20 : x
  2. Step 2: Convert to fraction form
    155,558.20/232,991.70 = 127,910.20/x
  3. Step 3: Cross multiply
    155,558.20x = 232,991.70 × 127,910.20
  4. Step 4: Simplify right side
    155,558.20x = 29,802,014,945.34
  5. Step 5: Solve for x
    x = 29,802,014,945.34/155,558.20
  6. Step 6: Final answer
    x = 191,581.12

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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.