Home / 120,021.27-180,053.78-41,143.47

Finding the Fourth Proportional to 120,021.27, 180,053.78 and 41,143.47

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Solution

The fourth proportional to 120,021.27, 180,053.78 and 41,143.47 is: 61,722.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,021.27 : 180,053.78 = 41,143.47 : x
  2. Step 2: Convert to fraction form
    120,021.27/180,053.78 = 41,143.47/x
  3. Step 3: Cross multiply
    120,021.27x = 180,053.78 × 41,143.47
  4. Step 4: Simplify right side
    120,021.27x = 7,408,037,295.82
  5. Step 5: Solve for x
    x = 7,408,037,295.82/120,021.27
  6. Step 6: Final answer
    x = 61,722.70

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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.