Home / 213,603.50-320,427.18-80,595.69

Finding the Fourth Proportional to 213,603.50, 320,427.18 and 80,595.69

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Solution

The fourth proportional to 213,603.50, 320,427.18 and 80,595.69 is: 120,901.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,603.50 : 320,427.18 = 80,595.69 : x
  2. Step 2: Convert to fraction form
    213,603.50/320,427.18 = 80,595.69/x
  3. Step 3: Cross multiply
    213,603.50x = 320,427.18 × 80,595.69
  4. Step 4: Simplify right side
    213,603.50x = 25,825,049,666.85
  5. Step 5: Solve for x
    x = 25,825,049,666.85/213,603.50
  6. Step 6: Final answer
    x = 120,901.81

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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.