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Finding the Fourth Proportional to 159,892.31, 220,647.93 and 87,292.73

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Solution

The fourth proportional to 159,892.31, 220,647.93 and 87,292.73 is: 120,462.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,892.31 : 220,647.93 = 87,292.73 : x
  2. Step 2: Convert to fraction form
    159,892.31/220,647.93 = 87,292.73/x
  3. Step 3: Cross multiply
    159,892.31x = 220,647.93 × 87,292.73
  4. Step 4: Simplify right side
    159,892.31x = 19,260,960,178.55
  5. Step 5: Solve for x
    x = 19,260,960,178.55/159,892.31
  6. Step 6: Final answer
    x = 120,462.08

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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.