Home / 120,275.82-180,360.43-64,105.46

Finding the Fourth Proportional to 120,275.82, 180,360.43 and 64,105.46

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Solution

The fourth proportional to 120,275.82, 180,360.43 and 64,105.46 is: 96,129.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,275.82 : 180,360.43 = 64,105.46 : x
  2. Step 2: Convert to fraction form
    120,275.82/180,360.43 = 64,105.46/x
  3. Step 3: Cross multiply
    120,275.82x = 180,360.43 × 64,105.46
  4. Step 4: Simplify right side
    120,275.82x = 11,562,088,330.95
  5. Step 5: Solve for x
    x = 11,562,088,330.95/120,275.82
  6. Step 6: Final answer
    x = 96,129.78

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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.