Home / 221,111.84-331,564.08-80,772.32

Finding the Fourth Proportional to 221,111.84, 331,564.08 and 80,772.32

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Solution

The fourth proportional to 221,111.84, 331,564.08 and 80,772.32 is: 121,120.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,111.84 : 331,564.08 = 80,772.32 : x
  2. Step 2: Convert to fraction form
    221,111.84/331,564.08 = 80,772.32/x
  3. Step 3: Cross multiply
    221,111.84x = 331,564.08 × 80,772.32
  4. Step 4: Simplify right side
    221,111.84x = 26,781,199,970.27
  5. Step 5: Solve for x
    x = 26,781,199,970.27/221,111.84
  6. Step 6: Final answer
    x = 121,120.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.