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Finding the Fourth Proportional to 155,313.71, 214,350.57 and 86,410.00

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Solution

The fourth proportional to 155,313.71, 214,350.57 and 86,410.00 is: 119,255.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,313.71 : 214,350.57 = 86,410.00 : x
  2. Step 2: Convert to fraction form
    155,313.71/214,350.57 = 86,410.00/x
  3. Step 3: Cross multiply
    155,313.71x = 214,350.57 × 86,410.00
  4. Step 4: Simplify right side
    155,313.71x = 18,522,031,249.90
  5. Step 5: Solve for x
    x = 18,522,031,249.90/155,313.71
  6. Step 6: Final answer
    x = 119,255.61

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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.