Home / 129,619.82-178,898.56-75,901.70

Finding the Fourth Proportional to 129,619.82, 178,898.56 and 75,901.70

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Solution

The fourth proportional to 129,619.82, 178,898.56 and 75,901.70 is: 104,757.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,619.82 : 178,898.56 = 75,901.70 : x
  2. Step 2: Convert to fraction form
    129,619.82/178,898.56 = 75,901.70/x
  3. Step 3: Cross multiply
    129,619.82x = 178,898.56 × 75,901.70
  4. Step 4: Simplify right side
    129,619.82x = 13,578,704,831.55
  5. Step 5: Solve for x
    x = 13,578,704,831.55/129,619.82
  6. Step 6: Final answer
    x = 104,757.94

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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.