Home / 129,976.38-179,364.78-73,386.54

Finding the Fourth Proportional to 129,976.38, 179,364.78 and 73,386.54

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Solution

The fourth proportional to 129,976.38, 179,364.78 and 73,386.54 is: 101,271.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,976.38 : 179,364.78 = 73,386.54 : x
  2. Step 2: Convert to fraction form
    129,976.38/179,364.78 = 73,386.54/x
  3. Step 3: Cross multiply
    129,976.38x = 179,364.78 × 73,386.54
  4. Step 4: Simplify right side
    129,976.38x = 13,162,960,602.06
  5. Step 5: Solve for x
    x = 13,162,960,602.06/129,976.38
  6. Step 6: Final answer
    x = 101,271.94

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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.