Home / 145,531.26-200,826.63-81,003.87

Finding the Fourth Proportional to 145,531.26, 200,826.63 and 81,003.87

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Solution

The fourth proportional to 145,531.26, 200,826.63 and 81,003.87 is: 111,781.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,531.26 : 200,826.63 = 81,003.87 : x
  2. Step 2: Convert to fraction form
    145,531.26/200,826.63 = 81,003.87/x
  3. Step 3: Cross multiply
    145,531.26x = 200,826.63 × 81,003.87
  4. Step 4: Simplify right side
    145,531.26x = 16,267,734,229.06
  5. Step 5: Solve for x
    x = 16,267,734,229.06/145,531.26
  6. Step 6: Final answer
    x = 111,781.72

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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.