Home / 214,513.48-321,854.88-81,429.06

Finding the Fourth Proportional to 214,513.48, 321,854.88 and 81,429.06

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Solution

The fourth proportional to 214,513.48, 321,854.88 and 81,429.06 is: 122,175.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,513.48 : 321,854.88 = 81,429.06 : x
  2. Step 2: Convert to fraction form
    214,513.48/321,854.88 = 81,429.06/x
  3. Step 3: Cross multiply
    214,513.48x = 321,854.88 × 81,429.06
  4. Step 4: Simplify right side
    214,513.48x = 26,208,340,334.81
  5. Step 5: Solve for x
    x = 26,208,340,334.81/214,513.48
  6. Step 6: Final answer
    x = 122,175.73

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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.