Home / 145,540.46-200,840.61-81,007.56

Finding the Fourth Proportional to 145,540.46, 200,840.61 and 81,007.56

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Solution

The fourth proportional to 145,540.46, 200,840.61 and 81,007.56 is: 111,787.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,540.46 : 200,840.61 = 81,007.56 : x
  2. Step 2: Convert to fraction form
    145,540.46/200,840.61 = 81,007.56/x
  3. Step 3: Cross multiply
    145,540.46x = 200,840.61 × 81,007.56
  4. Step 4: Simplify right side
    145,540.46x = 16,269,608,068.79
  5. Step 5: Solve for x
    x = 16,269,608,068.79/145,540.46
  6. Step 6: Final answer
    x = 111,787.52

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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.