Home / 153,163.72-211,353.69-85,180.83

Finding the Fourth Proportional to 153,163.72, 211,353.69 and 85,180.83

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Solution

The fourth proportional to 153,163.72, 211,353.69 and 85,180.83 is: 117,542.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,163.72 : 211,353.69 = 85,180.83 : x
  2. Step 2: Convert to fraction form
    153,163.72/211,353.69 = 85,180.83/x
  3. Step 3: Cross multiply
    153,163.72x = 211,353.69 × 85,180.83
  4. Step 4: Simplify right side
    153,163.72x = 18,003,281,785.47
  5. Step 5: Solve for x
    x = 18,003,281,785.47/153,163.72
  6. Step 6: Final answer
    x = 117,542.73

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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.