Home / 145,367.28-200,601.60-81,708.56

Finding the Fourth Proportional to 145,367.28, 200,601.60 and 81,708.56

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Solution

The fourth proportional to 145,367.28, 200,601.60 and 81,708.56 is: 112,754.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,367.28 : 200,601.60 = 81,708.56 : x
  2. Step 2: Convert to fraction form
    145,367.28/200,601.60 = 81,708.56/x
  3. Step 3: Cross multiply
    145,367.28x = 200,601.60 × 81,708.56
  4. Step 4: Simplify right side
    145,367.28x = 16,390,867,869.70
  5. Step 5: Solve for x
    x = 16,390,867,869.70/145,367.28
  6. Step 6: Final answer
    x = 112,754.86

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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.