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Finding the Fourth Proportional to 170,590.08, 255,885.12 and 87,431.04

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Solution

The fourth proportional to 170,590.08, 255,885.12 and 87,431.04 is: 131,146.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,590.08 : 255,885.12 = 87,431.04 : x
  2. Step 2: Convert to fraction form
    170,590.08/255,885.12 = 87,431.04/x
  3. Step 3: Cross multiply
    170,590.08x = 255,885.12 × 87,431.04
  4. Step 4: Simplify right side
    170,590.08x = 22,372,302,162.12
  5. Step 5: Solve for x
    x = 22,372,302,162.12/170,590.08
  6. Step 6: Final answer
    x = 131,146.56

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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.