Home / 221,342.29-331,816.20-81,068.11

Finding the Fourth Proportional to 221,342.29, 331,816.20 and 81,068.11

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Solution

The fourth proportional to 221,342.29, 331,816.20 and 81,068.11 is: 121,529.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,342.29 : 331,816.20 = 81,068.11 : x
  2. Step 2: Convert to fraction form
    221,342.29/331,816.20 = 81,068.11/x
  3. Step 3: Cross multiply
    221,342.29x = 331,816.20 × 81,068.11
  4. Step 4: Simplify right side
    221,342.29x = 26,899,712,201.38
  5. Step 5: Solve for x
    x = 26,899,712,201.38/221,342.29
  6. Step 6: Final answer
    x = 121,529.93

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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.