Home / 171,405.12-257,273.70-82,720.92

Finding the Fourth Proportional to 171,405.12, 257,273.70 and 82,720.92

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Solution

The fourth proportional to 171,405.12, 257,273.70 and 82,720.92 is: 124,161.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,405.12 : 257,273.70 = 82,720.92 : x
  2. Step 2: Convert to fraction form
    171,405.12/257,273.70 = 82,720.92/x
  3. Step 3: Cross multiply
    171,405.12x = 257,273.70 × 82,720.92
  4. Step 4: Simplify right side
    171,405.12x = 21,281,917,155.80
  5. Step 5: Solve for x
    x = 21,281,917,155.80/171,405.12
  6. Step 6: Final answer
    x = 124,161.50

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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.