Home / 100,163.16-138,181.05-59,856.66

Finding the Fourth Proportional to 100,163.16, 138,181.05 and 59,856.66

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Solution

The fourth proportional to 100,163.16, 138,181.05 and 59,856.66 is: 82,575.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,163.16 : 138,181.05 = 59,856.66 : x
  2. Step 2: Convert to fraction form
    100,163.16/138,181.05 = 59,856.66/x
  3. Step 3: Cross multiply
    100,163.16x = 138,181.05 × 59,856.66
  4. Step 4: Simplify right side
    100,163.16x = 8,271,056,128.29
  5. Step 5: Solve for x
    x = 8,271,056,128.29/100,163.16
  6. Step 6: Final answer
    x = 82,575.83

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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.