Home / 119,841.44-165,379.88-66,128.72

Finding the Fourth Proportional to 119,841.44, 165,379.88 and 66,128.72

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Solution

The fourth proportional to 119,841.44, 165,379.88 and 66,128.72 is: 91,256.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,841.44 : 165,379.88 = 66,128.72 : x
  2. Step 2: Convert to fraction form
    119,841.44/165,379.88 = 66,128.72/x
  3. Step 3: Cross multiply
    119,841.44x = 165,379.88 × 66,128.72
  4. Step 4: Simplify right side
    119,841.44x = 10,936,359,778.15
  5. Step 5: Solve for x
    x = 10,936,359,778.15/119,841.44
  6. Step 6: Final answer
    x = 91,256.91

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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.