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Finding the Fourth Proportional to 159,698.77, 220,384.52 and 87,101.91

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Solution

The fourth proportional to 159,698.77, 220,384.52 and 87,101.91 is: 120,200.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,698.77 : 220,384.52 = 87,101.91 : x
  2. Step 2: Convert to fraction form
    159,698.77/220,384.52 = 87,101.91/x
  3. Step 3: Cross multiply
    159,698.77x = 220,384.52 × 87,101.91
  4. Step 4: Simplify right side
    159,698.77x = 19,195,912,626.43
  5. Step 5: Solve for x
    x = 19,195,912,626.43/159,698.77
  6. Step 6: Final answer
    x = 120,200.75

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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.