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Finding the Fourth Proportional to 159,238.62, 219,744.77 and 87,618.69

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Solution

The fourth proportional to 159,238.62, 219,744.77 and 87,618.69 is: 120,911.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,238.62 : 219,744.77 = 87,618.69 : x
  2. Step 2: Convert to fraction form
    159,238.62/219,744.77 = 87,618.69/x
  3. Step 3: Cross multiply
    159,238.62x = 219,744.77 × 87,618.69
  4. Step 4: Simplify right side
    159,238.62x = 19,253,748,443.66
  5. Step 5: Solve for x
    x = 19,253,748,443.66/159,238.62
  6. Step 6: Final answer
    x = 120,911.30

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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.