Home / 120,856.37-181,222.28-54,239.39

Finding the Fourth Proportional to 120,856.37, 181,222.28 and 54,239.39

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Solution

The fourth proportional to 120,856.37, 181,222.28 and 54,239.39 is: 81,331.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,856.37 : 181,222.28 = 54,239.39 : x
  2. Step 2: Convert to fraction form
    120,856.37/181,222.28 = 54,239.39/x
  3. Step 3: Cross multiply
    120,856.37x = 181,222.28 × 54,239.39
  4. Step 4: Simplify right side
    120,856.37x = 9,829,384,744.30
  5. Step 5: Solve for x
    x = 9,829,384,744.30/120,856.37
  6. Step 6: Final answer
    x = 81,331.13

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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.