Home / 102,923.75-142,034.78-55,819.75

Finding the Fourth Proportional to 102,923.75, 142,034.78 and 55,819.75

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Solution

The fourth proportional to 102,923.75, 142,034.78 and 55,819.75 is: 77,031.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,923.75 : 142,034.78 = 55,819.75 : x
  2. Step 2: Convert to fraction form
    102,923.75/142,034.78 = 55,819.75/x
  3. Step 3: Cross multiply
    102,923.75x = 142,034.78 × 55,819.75
  4. Step 4: Simplify right side
    102,923.75x = 7,928,345,910.91
  5. Step 5: Solve for x
    x = 7,928,345,910.91/102,923.75
  6. Step 6: Final answer
    x = 77,031.26

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1.5x scale

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.