Home / 100,836.62-139,152.08-55,514.24

Finding the Fourth Proportional to 100,836.62, 139,152.08 and 55,514.24

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Solution

The fourth proportional to 100,836.62, 139,152.08 and 55,514.24 is: 76,608.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,836.62 : 139,152.08 = 55,514.24 : x
  2. Step 2: Convert to fraction form
    100,836.62/139,152.08 = 55,514.24/x
  3. Step 3: Cross multiply
    100,836.62x = 139,152.08 × 55,514.24
  4. Step 4: Simplify right side
    100,836.62x = 7,724,921,965.62
  5. Step 5: Solve for x
    x = 7,724,921,965.62/100,836.62
  6. Step 6: Final answer
    x = 76,608.30

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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.