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Finding the Fourth Proportional to 159,181.95, 219,669.86 and 87,560.40

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Solution

The fourth proportional to 159,181.95, 219,669.86 and 87,560.40 is: 120,832.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,181.95 : 219,669.86 = 87,560.40 : x
  2. Step 2: Convert to fraction form
    159,181.95/219,669.86 = 87,560.40/x
  3. Step 3: Cross multiply
    159,181.95x = 219,669.86 × 87,560.40
  4. Step 4: Simplify right side
    159,181.95x = 19,234,381,028.45
  5. Step 5: Solve for x
    x = 19,234,381,028.45/159,181.95
  6. Step 6: Final answer
    x = 120,832.68

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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.