Home / 120,083.15-180,124.47-112,775.83

Finding the Fourth Proportional to 120,083.15, 180,124.47 and 112,775.83

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Solution

The fourth proportional to 120,083.15, 180,124.47 and 112,775.83 is: 169,163.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,083.15 : 180,124.47 = 112,775.83 : x
  2. Step 2: Convert to fraction form
    120,083.15/180,124.47 = 112,775.83/x
  3. Step 3: Cross multiply
    120,083.15x = 180,124.47 × 112,775.83
  4. Step 4: Simplify right side
    120,083.15x = 20,313,686,607.56
  5. Step 5: Solve for x
    x = 20,313,686,607.56/120,083.15
  6. Step 6: Final answer
    x = 169,163.51

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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.