Home / 214,396.36-321,165.74-128,960.05

Finding the Fourth Proportional to 214,396.36, 321,165.74 and 128,960.05

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Solution

The fourth proportional to 214,396.36, 321,165.74 and 128,960.05 is: 193,182.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,396.36 : 321,165.74 = 128,960.05 : x
  2. Step 2: Convert to fraction form
    214,396.36/321,165.74 = 128,960.05/x
  3. Step 3: Cross multiply
    214,396.36x = 321,165.74 × 128,960.05
  4. Step 4: Simplify right side
    214,396.36x = 41,417,549,888.69
  5. Step 5: Solve for x
    x = 41,417,549,888.69/214,396.36
  6. Step 6: Final answer
    x = 193,182.15

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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.