Home / 100,125.22-138,163.40-59,830.96

Finding the Fourth Proportional to 100,125.22, 138,163.40 and 59,830.96

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Solution

The fourth proportional to 100,125.22, 138,163.40 and 59,830.96 is: 82,561.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,125.22 : 138,163.40 = 59,830.96 : x
  2. Step 2: Convert to fraction form
    100,125.22/138,163.40 = 59,830.96/x
  3. Step 3: Cross multiply
    100,125.22x = 138,163.40 × 59,830.96
  4. Step 4: Simplify right side
    100,125.22x = 8,266,448,858.86
  5. Step 5: Solve for x
    x = 8,266,448,858.86/100,125.22
  6. Step 6: Final answer
    x = 82,561.11

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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.