Home / 100,852.56-139,214.62-79,286.04

Finding the Fourth Proportional to 100,852.56, 139,214.62 and 79,286.04

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Solution

The fourth proportional to 100,852.56, 139,214.62 and 79,286.04 is: 109,444.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,852.56 : 139,214.62 = 79,286.04 : x
  2. Step 2: Convert to fraction form
    100,852.56/139,214.62 = 79,286.04/x
  3. Step 3: Cross multiply
    100,852.56x = 139,214.62 × 79,286.04
  4. Step 4: Simplify right side
    100,852.56x = 11,037,775,929.90
  5. Step 5: Solve for x
    x = 11,037,775,929.90/100,852.56
  6. Step 6: Final answer
    x = 109,444.68

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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.