Home / 145,715.22-218,419.68-66,764.52

Finding the Fourth Proportional to 145,715.22, 218,419.68 and 66,764.52

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Solution

The fourth proportional to 145,715.22, 218,419.68 and 66,764.52 is: 100,076.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,715.22 : 218,419.68 = 66,764.52 : x
  2. Step 2: Convert to fraction form
    145,715.22/218,419.68 = 66,764.52/x
  3. Step 3: Cross multiply
    145,715.22x = 218,419.68 × 66,764.52
  4. Step 4: Simplify right side
    145,715.22x = 14,582,685,093.75
  5. Step 5: Solve for x
    x = 14,582,685,093.75/145,715.22
  6. Step 6: Final answer
    x = 100,076.61

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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.