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Finding the Fourth Proportional to 159,616.32, 220,272.02 and 87,998.90

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Solution

The fourth proportional to 159,616.32, 220,272.02 and 87,998.90 is: 121,439.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,616.32 : 220,272.02 = 87,998.90 : x
  2. Step 2: Convert to fraction form
    159,616.32/220,272.02 = 87,998.90/x
  3. Step 3: Cross multiply
    159,616.32x = 220,272.02 × 87,998.90
  4. Step 4: Simplify right side
    159,616.32x = 19,383,695,457.32
  5. Step 5: Solve for x
    x = 19,383,695,457.32/159,616.32
  6. Step 6: Final answer
    x = 121,439.31

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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.