Home / 170,742.30-256,113.45-120,878.70

Finding the Fourth Proportional to 170,742.30, 256,113.45 and 120,878.70

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Solution

The fourth proportional to 170,742.30, 256,113.45 and 120,878.70 is: 181,318.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,742.30 : 256,113.45 = 120,878.70 : x
  2. Step 2: Convert to fraction form
    170,742.30/256,113.45 = 120,878.70/x
  3. Step 3: Cross multiply
    170,742.30x = 256,113.45 × 120,878.70
  4. Step 4: Simplify right side
    170,742.30x = 30,958,660,888.52
  5. Step 5: Solve for x
    x = 30,958,660,888.52/170,742.30
  6. Step 6: Final answer
    x = 181,318.05

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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.