Home / 106,631.72-147,168.31-65,819.66

Finding the Fourth Proportional to 106,631.72, 147,168.31 and 65,819.66

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Solution

The fourth proportional to 106,631.72, 147,168.31 and 65,819.66 is: 90,841.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,631.72 : 147,168.31 = 65,819.66 : x
  2. Step 2: Convert to fraction form
    106,631.72/147,168.31 = 65,819.66/x
  3. Step 3: Cross multiply
    106,631.72x = 147,168.31 × 65,819.66
  4. Step 4: Simplify right side
    106,631.72x = 9,686,568,126.97
  5. Step 5: Solve for x
    x = 9,686,568,126.97/106,631.72
  6. Step 6: Final answer
    x = 90,841.34

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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.