Home / 132,720.21-199,162.13-53,835.12

Finding the Fourth Proportional to 132,720.21, 199,162.13 and 53,835.12

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Solution

The fourth proportional to 132,720.21, 199,162.13 and 53,835.12 is: 80,785.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,720.21 : 199,162.13 = 53,835.12 : x
  2. Step 2: Convert to fraction form
    132,720.21/199,162.13 = 53,835.12/x
  3. Step 3: Cross multiply
    132,720.21x = 199,162.13 × 53,835.12
  4. Step 4: Simplify right side
    132,720.21x = 10,721,916,898.83
  5. Step 5: Solve for x
    x = 10,721,916,898.83/132,720.21
  6. Step 6: Final answer
    x = 80,785.86

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1.5x scale

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.