Home / 145,091.57-200,245.92-81,432.86

Finding the Fourth Proportional to 145,091.57, 200,245.92 and 81,432.86

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Solution

The fourth proportional to 145,091.57, 200,245.92 and 81,432.86 is: 112,388.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,091.57 : 200,245.92 = 81,432.86 : x
  2. Step 2: Convert to fraction form
    145,091.57/200,245.92 = 81,432.86/x
  3. Step 3: Cross multiply
    145,091.57x = 200,245.92 × 81,432.86
  4. Step 4: Simplify right side
    145,091.57x = 16,306,597,968.93
  5. Step 5: Solve for x
    x = 16,306,597,968.93/145,091.57
  6. Step 6: Final answer
    x = 112,388.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.