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Finding the Fourth Proportional to 159,574.77, 220,210.53 and 87,961.44

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Solution

The fourth proportional to 159,574.77, 220,210.53 and 87,961.44 is: 121,385.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,574.77 : 220,210.53 = 87,961.44 : x
  2. Step 2: Convert to fraction form
    159,574.77/220,210.53 = 87,961.44/x
  3. Step 3: Cross multiply
    159,574.77x = 220,210.53 × 87,961.44
  4. Step 4: Simplify right side
    159,574.77x = 19,370,035,321.96
  5. Step 5: Solve for x
    x = 19,370,035,321.96/159,574.77
  6. Step 6: Final answer
    x = 121,385.33

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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.