Home / 100,837.31-139,152.94-55,514.84

Finding the Fourth Proportional to 100,837.31, 139,152.94 and 55,514.84

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Solution

The fourth proportional to 100,837.31, 139,152.94 and 55,514.84 is: 76,609.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,837.31 : 139,152.94 = 55,514.84 : x
  2. Step 2: Convert to fraction form
    100,837.31/139,152.94 = 55,514.84/x
  3. Step 3: Cross multiply
    100,837.31x = 139,152.94 × 55,514.84
  4. Step 4: Simplify right side
    100,837.31x = 7,725,052,365.08
  5. Step 5: Solve for x
    x = 7,725,052,365.08/100,837.31
  6. Step 6: Final answer
    x = 76,609.07

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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.