Home / 219,761.67-303,309.96-129,117.61

Finding the Fourth Proportional to 219,761.67, 303,309.96 and 129,117.61

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Solution

The fourth proportional to 219,761.67, 303,309.96 and 129,117.61 is: 178,205.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,761.67 : 303,309.96 = 129,117.61 : x
  2. Step 2: Convert to fraction form
    219,761.67/303,309.96 = 129,117.61/x
  3. Step 3: Cross multiply
    219,761.67x = 303,309.96 × 129,117.61
  4. Step 4: Simplify right side
    219,761.67x = 39,162,657,019.34
  5. Step 5: Solve for x
    x = 39,162,657,019.34/219,761.67
  6. Step 6: Final answer
    x = 178,205.13

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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.