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Finding the Fourth Proportional to 159,112.99, 219,568.40 and 87,496.03

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Solution

The fourth proportional to 159,112.99, 219,568.40 and 87,496.03 is: 120,740.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,112.99 : 219,568.40 = 87,496.03 : x
  2. Step 2: Convert to fraction form
    159,112.99/219,568.40 = 87,496.03/x
  3. Step 3: Cross multiply
    159,112.99x = 219,568.40 × 87,496.03
  4. Step 4: Simplify right side
    159,112.99x = 19,211,363,313.45
  5. Step 5: Solve for x
    x = 19,211,363,313.45/159,112.99
  6. Step 6: Final answer
    x = 120,740.38

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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.