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Finding the Fourth Proportional to 159,414.36, 219,991.92 and 87,794.28

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Solution

The fourth proportional to 159,414.36, 219,991.92 and 87,794.28 is: 121,156.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,414.36 : 219,991.92 = 87,794.28 : x
  2. Step 2: Convert to fraction form
    159,414.36/219,991.92 = 87,794.28/x
  3. Step 3: Cross multiply
    159,414.36x = 219,991.92 × 87,794.28
  4. Step 4: Simplify right side
    159,414.36x = 19,314,032,222.22
  5. Step 5: Solve for x
    x = 19,314,032,222.22/159,414.36
  6. Step 6: Final answer
    x = 121,156.16

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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.