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Finding the Fourth Proportional to 159,548.45, 220,173.89 and 86,951.91

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Solution

The fourth proportional to 159,548.45, 220,173.89 and 86,951.91 is: 119,992.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,548.45 : 220,173.89 = 86,951.91 : x
  2. Step 2: Convert to fraction form
    159,548.45/220,173.89 = 86,951.91/x
  3. Step 3: Cross multiply
    159,548.45x = 220,173.89 × 86,951.91
  4. Step 4: Simplify right side
    159,548.45x = 19,144,539,832.87
  5. Step 5: Solve for x
    x = 19,144,539,832.87/159,548.45
  6. Step 6: Final answer
    x = 119,992.02

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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.