Home / 171,936.32-257,821.52-72,069.70

Finding the Fourth Proportional to 171,936.32, 257,821.52 and 72,069.70

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Solution

The fourth proportional to 171,936.32, 257,821.52 and 72,069.70 is: 108,069.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,936.32 : 257,821.52 = 72,069.70 : x
  2. Step 2: Convert to fraction form
    171,936.32/257,821.52 = 72,069.70/x
  3. Step 3: Cross multiply
    171,936.32x = 257,821.52 × 72,069.70
  4. Step 4: Simplify right side
    171,936.32x = 18,581,119,599.94
  5. Step 5: Solve for x
    x = 18,581,119,599.94/171,936.32
  6. Step 6: Final answer
    x = 108,069.78

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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.