Home / 129,221.48-193,812.78-82,798.76

Finding the Fourth Proportional to 129,221.48, 193,812.78 and 82,798.76

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Solution

The fourth proportional to 129,221.48, 193,812.78 and 82,798.76 is: 124,185.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,221.48 : 193,812.78 = 82,798.76 : x
  2. Step 2: Convert to fraction form
    129,221.48/193,812.78 = 82,798.76/x
  3. Step 3: Cross multiply
    129,221.48x = 193,812.78 × 82,798.76
  4. Step 4: Simplify right side
    129,221.48x = 16,047,457,856.15
  5. Step 5: Solve for x
    x = 16,047,457,856.15/129,221.48
  6. Step 6: Final answer
    x = 124,185.68

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1.5x scale

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.