Home / 214,117.45-321,151.15-86,028.55

Finding the Fourth Proportional to 214,117.45, 321,151.15 and 86,028.55

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Solution

The fourth proportional to 214,117.45, 321,151.15 and 86,028.55 is: 129,032.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,117.45 : 321,151.15 = 86,028.55 : x
  2. Step 2: Convert to fraction form
    214,117.45/321,151.15 = 86,028.55/x
  3. Step 3: Cross multiply
    214,117.45x = 321,151.15 × 86,028.55
  4. Step 4: Simplify right side
    214,117.45x = 27,628,166,159.58
  5. Step 5: Solve for x
    x = 27,628,166,159.58/214,117.45
  6. Step 6: Final answer
    x = 129,032.76

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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.