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Finding the Fourth Proportional to 145,541.67, 200,847.52 and 81,009.52

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Solution

The fourth proportional to 145,541.67, 200,847.52 and 81,009.52 is: 111,793.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,541.67 : 200,847.52 = 81,009.52 : x
  2. Step 2: Convert to fraction form
    145,541.67/200,847.52 = 81,009.52/x
  3. Step 3: Cross multiply
    145,541.67x = 200,847.52 × 81,009.52
  4. Step 4: Simplify right side
    145,541.67x = 16,270,560,331.86
  5. Step 5: Solve for x
    x = 16,270,560,331.86/145,541.67
  6. Step 6: Final answer
    x = 111,793.14

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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.