Home / 149,145.86-205,821.97-85,487.38

Finding the Fourth Proportional to 149,145.86, 205,821.97 and 85,487.38

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Solution

The fourth proportional to 149,145.86, 205,821.97 and 85,487.38 is: 117,972.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,145.86 : 205,821.97 = 85,487.38 : x
  2. Step 2: Convert to fraction form
    149,145.86/205,821.97 = 85,487.38/x
  3. Step 3: Cross multiply
    149,145.86x = 205,821.97 × 85,487.38
  4. Step 4: Simplify right side
    149,145.86x = 17,595,180,961.74
  5. Step 5: Solve for x
    x = 17,595,180,961.74/149,145.86
  6. Step 6: Final answer
    x = 117,972.98

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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.