Home / 129,867.86-179,217.78-73,284.50

Finding the Fourth Proportional to 129,867.86, 179,217.78 and 73,284.50

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Solution

The fourth proportional to 129,867.86, 179,217.78 and 73,284.50 is: 101,132.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,867.86 : 179,217.78 = 73,284.50 : x
  2. Step 2: Convert to fraction form
    129,867.86/179,217.78 = 73,284.50/x
  3. Step 3: Cross multiply
    129,867.86x = 179,217.78 × 73,284.50
  4. Step 4: Simplify right side
    129,867.86x = 13,133,885,398.41
  5. Step 5: Solve for x
    x = 13,133,885,398.41/129,867.86
  6. Step 6: Final answer
    x = 101,132.69

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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.