Home / 170,835.80-256,253.70-120,972.20

Finding the Fourth Proportional to 170,835.80, 256,253.70 and 120,972.20

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Solution

The fourth proportional to 170,835.80, 256,253.70 and 120,972.20 is: 181,458.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,835.80 : 256,253.70 = 120,972.20 : x
  2. Step 2: Convert to fraction form
    170,835.80/256,253.70 = 120,972.20/x
  3. Step 3: Cross multiply
    170,835.80x = 256,253.70 × 120,972.20
  4. Step 4: Simplify right side
    170,835.80x = 30,999,573,847.14
  5. Step 5: Solve for x
    x = 30,999,573,847.14/170,835.80
  6. Step 6: Final answer
    x = 181,458.30

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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.