Home / 213,429.38-320,102.99-99,545.76

Finding the Fourth Proportional to 213,429.38, 320,102.99 and 99,545.76

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Solution

The fourth proportional to 213,429.38, 320,102.99 and 99,545.76 is: 149,299.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,429.38 : 320,102.99 = 99,545.76 : x
  2. Step 2: Convert to fraction form
    213,429.38/320,102.99 = 99,545.76/x
  3. Step 3: Cross multiply
    213,429.38x = 320,102.99 × 99,545.76
  4. Step 4: Simplify right side
    213,429.38x = 31,864,895,293.39
  5. Step 5: Solve for x
    x = 31,864,895,293.39/213,429.38
  6. Step 6: Final answer
    x = 149,299.48

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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.