Home / 149,531.66-206,385.71-85,904.54

Finding the Fourth Proportional to 149,531.66, 206,385.71 and 85,904.54

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Solution

The fourth proportional to 149,531.66, 206,385.71 and 85,904.54 is: 118,566.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,531.66 : 206,385.71 = 85,904.54 : x
  2. Step 2: Convert to fraction form
    149,531.66/206,385.71 = 85,904.54/x
  3. Step 3: Cross multiply
    149,531.66x = 206,385.71 × 85,904.54
  4. Step 4: Simplify right side
    149,531.66x = 17,729,468,018.67
  5. Step 5: Solve for x
    x = 17,729,468,018.67/149,531.66
  6. Step 6: Final answer
    x = 118,566.65

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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.