Home / 149,434.74-206,216.28-81,453.60

Finding the Fourth Proportional to 149,434.74, 206,216.28 and 81,453.60

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Solution

The fourth proportional to 149,434.74, 206,216.28 and 81,453.60 is: 112,403.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,434.74 : 206,216.28 = 81,453.60 : x
  2. Step 2: Convert to fraction form
    149,434.74/206,216.28 = 81,453.60/x
  3. Step 3: Cross multiply
    149,434.74x = 206,216.28 × 81,453.60
  4. Step 4: Simplify right side
    149,434.74x = 16,797,058,384.61
  5. Step 5: Solve for x
    x = 16,797,058,384.61/149,434.74
  6. Step 6: Final answer
    x = 112,403.97

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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.