Home / 155,933.86-215,188.68-84,313.90

Finding the Fourth Proportional to 155,933.86, 215,188.68 and 84,313.90

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Solution

The fourth proportional to 155,933.86, 215,188.68 and 84,313.90 is: 116,353.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,933.86 : 215,188.68 = 84,313.90 : x
  2. Step 2: Convert to fraction form
    155,933.86/215,188.68 = 84,313.90/x
  3. Step 3: Cross multiply
    155,933.86x = 215,188.68 × 84,313.90
  4. Step 4: Simplify right side
    155,933.86x = 18,143,396,846.65
  5. Step 5: Solve for x
    x = 18,143,396,846.65/155,933.86
  6. Step 6: Final answer
    x = 116,353.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.