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Finding the Fourth Proportional to 159,299.87, 219,832.08 and 87,678.35

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Solution

The fourth proportional to 159,299.87, 219,832.08 and 87,678.35 is: 120,995.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,299.87 : 219,832.08 = 87,678.35 : x
  2. Step 2: Convert to fraction form
    159,299.87/219,832.08 = 87,678.35/x
  3. Step 3: Cross multiply
    159,299.87x = 219,832.08 × 87,678.35
  4. Step 4: Simplify right side
    159,299.87x = 19,274,513,447.88
  5. Step 5: Solve for x
    x = 19,274,513,447.88/159,299.87
  6. Step 6: Final answer
    x = 120,995.16

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1.5x scale

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.