Home / 188,717.71-260,437.60-108,160.78

Finding the Fourth Proportional to 188,717.71, 260,437.60 and 108,160.78

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Solution

The fourth proportional to 188,717.71, 260,437.60 and 108,160.78 is: 149,265.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,717.71 : 260,437.60 = 108,160.78 : x
  2. Step 2: Convert to fraction form
    188,717.71/260,437.60 = 108,160.78/x
  3. Step 3: Cross multiply
    188,717.71x = 260,437.60 × 108,160.78
  4. Step 4: Simplify right side
    188,717.71x = 28,169,134,600.20
  5. Step 5: Solve for x
    x = 28,169,134,600.20/188,717.71
  6. Step 6: Final answer
    x = 149,265.98

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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.