Home / 156,660.31-216,195.15-85,040.33

Finding the Fourth Proportional to 156,660.31, 216,195.15 and 85,040.33

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Solution

The fourth proportional to 156,660.31, 216,195.15 and 85,040.33 is: 117,357.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,660.31 : 216,195.15 = 85,040.33 : x
  2. Step 2: Convert to fraction form
    156,660.31/216,195.15 = 85,040.33/x
  3. Step 3: Cross multiply
    156,660.31x = 216,195.15 × 85,040.33
  4. Step 4: Simplify right side
    156,660.31x = 18,385,305,394.22
  5. Step 5: Solve for x
    x = 18,385,305,394.22/156,660.31
  6. Step 6: Final answer
    x = 117,357.77

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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.