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Finding the Fourth Proportional to 159,063.75, 219,513.11 and 87,448.95

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Solution

The fourth proportional to 159,063.75, 219,513.11 and 87,448.95 is: 120,682.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,063.75 : 219,513.11 = 87,448.95 : x
  2. Step 2: Convert to fraction form
    159,063.75/219,513.11 = 87,448.95/x
  3. Step 3: Cross multiply
    159,063.75x = 219,513.11 × 87,448.95
  4. Step 4: Simplify right side
    159,063.75x = 19,196,190,543.49
  5. Step 5: Solve for x
    x = 19,196,190,543.49/159,063.75
  6. Step 6: Final answer
    x = 120,682.37

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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.