Home / 99,442.15-149,163.22-81,875.07

Finding the Fourth Proportional to 99,442.15, 149,163.22 and 81,875.07

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Solution

The fourth proportional to 99,442.15, 149,163.22 and 81,875.07 is: 122,812.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,442.15 : 149,163.22 = 81,875.07 : x
  2. Step 2: Convert to fraction form
    99,442.15/149,163.22 = 81,875.07/x
  3. Step 3: Cross multiply
    99,442.15x = 149,163.22 × 81,875.07
  4. Step 4: Simplify right side
    99,442.15x = 12,212,749,181.27
  5. Step 5: Solve for x
    x = 12,212,749,181.27/99,442.15
  6. Step 6: Final answer
    x = 122,812.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.