Home / 149,657.10-206,531.61-85,124.69

Finding the Fourth Proportional to 149,657.10, 206,531.61 and 85,124.69

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Solution

The fourth proportional to 149,657.10, 206,531.61 and 85,124.69 is: 117,474.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,657.10 : 206,531.61 = 85,124.69 : x
  2. Step 2: Convert to fraction form
    149,657.10/206,531.61 = 85,124.69/x
  3. Step 3: Cross multiply
    149,657.10x = 206,531.61 × 85,124.69
  4. Step 4: Simplify right side
    149,657.10x = 17,580,938,243.79
  5. Step 5: Solve for x
    x = 17,580,938,243.79/149,657.10
  6. Step 6: Final answer
    x = 117,474.80

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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.