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Finding the Fourth Proportional to 157,992.48, 218,027.16 and 86,370.84

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Solution

The fourth proportional to 157,992.48, 218,027.16 and 86,370.84 is: 119,190.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,992.48 : 218,027.16 = 86,370.84 : x
  2. Step 2: Convert to fraction form
    157,992.48/218,027.16 = 86,370.84/x
  3. Step 3: Cross multiply
    157,992.48x = 218,027.16 × 86,370.84
  4. Step 4: Simplify right side
    157,992.48x = 18,831,188,952.01
  5. Step 5: Solve for x
    x = 18,831,188,952.01/157,992.48
  6. Step 6: Final answer
    x = 119,190.41

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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.