Home / 219,729.96-303,229.70-129,089.72

Finding the Fourth Proportional to 219,729.96, 303,229.70 and 129,089.72

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Solution

The fourth proportional to 219,729.96, 303,229.70 and 129,089.72 is: 178,145.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,729.96 : 303,229.70 = 129,089.72 : x
  2. Step 2: Convert to fraction form
    219,729.96/303,229.70 = 129,089.72/x
  3. Step 3: Cross multiply
    219,729.96x = 303,229.70 × 129,089.72
  4. Step 4: Simplify right side
    219,729.96x = 39,143,837,068.68
  5. Step 5: Solve for x
    x = 39,143,837,068.68/219,729.96
  6. Step 6: Final answer
    x = 178,145.20

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1.5x scale

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.