Home / 170,403.96-255,516.18-90,486.72

Finding the Fourth Proportional to 170,403.96, 255,516.18 and 90,486.72

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Solution

The fourth proportional to 170,403.96, 255,516.18 and 90,486.72 is: 135,682.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,403.96 : 255,516.18 = 90,486.72 : x
  2. Step 2: Convert to fraction form
    170,403.96/255,516.18 = 90,486.72/x
  3. Step 3: Cross multiply
    170,403.96x = 255,516.18 × 90,486.72
  4. Step 4: Simplify right side
    170,403.96x = 23,120,821,035.13
  5. Step 5: Solve for x
    x = 23,120,821,035.13/170,403.96
  6. Step 6: Final answer
    x = 135,682.42

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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.