Home / 120,169.24-180,360.78-64,055.68

Finding the Fourth Proportional to 120,169.24, 180,360.78 and 64,055.68

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Solution

The fourth proportional to 120,169.24, 180,360.78 and 64,055.68 is: 96,140.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,169.24 : 180,360.78 = 64,055.68 : x
  2. Step 2: Convert to fraction form
    120,169.24/180,360.78 = 64,055.68/x
  3. Step 3: Cross multiply
    120,169.24x = 180,360.78 × 64,055.68
  4. Step 4: Simplify right side
    120,169.24x = 11,553,132,408.23
  5. Step 5: Solve for x
    x = 11,553,132,408.23/120,169.24
  6. Step 6: Final answer
    x = 96,140.51

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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.