Home / 149,733.20-206,671.56-86,078

Finding the Fourth Proportional to 149,733.20, 206,671.56 and 86,078

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Solution

The fourth proportional to 149,733.20, 206,671.56 and 86,078 is: 118,810.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,733.20 : 206,671.56 = 86,078 : x
  2. Step 2: Convert to fraction form
    149,733.20/206,671.56 = 86,078/x
  3. Step 3: Cross multiply
    149,733.20x = 206,671.56 × 86,078
  4. Step 4: Simplify right side
    149,733.20x = 17,789,874,541.68
  5. Step 5: Solve for x
    x = 17,789,874,541.68/149,733.20
  6. Step 6: Final answer
    x = 118,810.49

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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.