Home / 167,688.20-231,407.40-91,205.64

Finding the Fourth Proportional to 167,688.20, 231,407.40 and 91,205.64

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Solution

The fourth proportional to 167,688.20, 231,407.40 and 91,205.64 is: 125,862.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,688.20 : 231,407.40 = 91,205.64 : x
  2. Step 2: Convert to fraction form
    167,688.20/231,407.40 = 91,205.64/x
  3. Step 3: Cross multiply
    167,688.20x = 231,407.40 × 91,205.64
  4. Step 4: Simplify right side
    167,688.20x = 21,105,660,017.74
  5. Step 5: Solve for x
    x = 21,105,660,017.74/167,688.20
  6. Step 6: Final answer
    x = 125,862.52

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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.