Home / 149,359.05-206,117.31-85,702.77

Finding the Fourth Proportional to 149,359.05, 206,117.31 and 85,702.77

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Solution

The fourth proportional to 149,359.05, 206,117.31 and 85,702.77 is: 118,270.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,359.05 : 206,117.31 = 85,702.77 : x
  2. Step 2: Convert to fraction form
    149,359.05/206,117.31 = 85,702.77/x
  3. Step 3: Cross multiply
    149,359.05x = 206,117.31 × 85,702.77
  4. Step 4: Simplify right side
    149,359.05x = 17,664,824,411.95
  5. Step 5: Solve for x
    x = 17,664,824,411.95/149,359.05
  6. Step 6: Final answer
    x = 118,270.87

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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.