Home / 100,257.89-138,346.69-57,808.22

Finding the Fourth Proportional to 100,257.89, 138,346.69 and 57,808.22

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Solution

The fourth proportional to 100,257.89, 138,346.69 and 57,808.22 is: 79,770.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,257.89 : 138,346.69 = 57,808.22 : x
  2. Step 2: Convert to fraction form
    100,257.89/138,346.69 = 57,808.22/x
  3. Step 3: Cross multiply
    100,257.89x = 138,346.69 × 57,808.22
  4. Step 4: Simplify right side
    100,257.89x = 7,997,576,309.92
  5. Step 5: Solve for x
    x = 7,997,576,309.92/100,257.89
  6. Step 6: Final answer
    x = 79,770.04

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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.