Home / 149,650.25-206,518.55-81,667.76

Finding the Fourth Proportional to 149,650.25, 206,518.55 and 81,667.76

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Solution

The fourth proportional to 149,650.25, 206,518.55 and 81,667.76 is: 112,702.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,650.25 : 206,518.55 = 81,667.76 : x
  2. Step 2: Convert to fraction form
    149,650.25/206,518.55 = 81,667.76/x
  3. Step 3: Cross multiply
    149,650.25x = 206,518.55 × 81,667.76
  4. Step 4: Simplify right side
    149,650.25x = 16,865,905,936.02
  5. Step 5: Solve for x
    x = 16,865,905,936.02/149,650.25
  6. Step 6: Final answer
    x = 112,702.16

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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.