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Finding the Fourth Proportional to 159,175.69, 219,664.28 and 87,556.23

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Solution

The fourth proportional to 159,175.69, 219,664.28 and 87,556.23 is: 120,828.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,175.69 : 219,664.28 = 87,556.23 : x
  2. Step 2: Convert to fraction form
    159,175.69/219,664.28 = 87,556.23/x
  3. Step 3: Cross multiply
    159,175.69x = 219,664.28 × 87,556.23
  4. Step 4: Simplify right side
    159,175.69x = 19,232,976,441.36
  5. Step 5: Solve for x
    x = 19,232,976,441.36/159,175.69
  6. Step 6: Final answer
    x = 120,828.61

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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.