Home / 213,537.87-320,345.28-71,369.10

Finding the Fourth Proportional to 213,537.87, 320,345.28 and 71,369.10

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Solution

The fourth proportional to 213,537.87, 320,345.28 and 71,369.10 is: 107,066.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,537.87 : 320,345.28 = 71,369.10 : x
  2. Step 2: Convert to fraction form
    213,537.87/320,345.28 = 71,369.10/x
  3. Step 3: Cross multiply
    213,537.87x = 320,345.28 × 71,369.10
  4. Step 4: Simplify right side
    213,537.87x = 22,862,754,322.85
  5. Step 5: Solve for x
    x = 22,862,754,322.85/213,537.87
  6. Step 6: Final answer
    x = 107,066.51

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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.