Home / 129,269.97-178,370.82-71,901.81

Finding the Fourth Proportional to 129,269.97, 178,370.82 and 71,901.81

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Solution

The fourth proportional to 129,269.97, 178,370.82 and 71,901.81 is: 99,212.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,269.97 : 178,370.82 = 71,901.81 : x
  2. Step 2: Convert to fraction form
    129,269.97/178,370.82 = 71,901.81/x
  3. Step 3: Cross multiply
    129,269.97x = 178,370.82 × 71,901.81
  4. Step 4: Simplify right side
    129,269.97x = 12,825,184,809.18
  5. Step 5: Solve for x
    x = 12,825,184,809.18/129,269.97
  6. Step 6: Final answer
    x = 99,212.41

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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.