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Finding the Fourth Proportional to 136,999.50, 205,499.25 and 38,503.50

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Solution

The fourth proportional to 136,999.50, 205,499.25 and 38,503.50 is: 57,755.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,999.50 : 205,499.25 = 38,503.50 : x
  2. Step 2: Convert to fraction form
    136,999.50/205,499.25 = 38,503.50/x
  3. Step 3: Cross multiply
    136,999.50x = 205,499.25 × 38,503.50
  4. Step 4: Simplify right side
    136,999.50x = 7,912,440,372.38
  5. Step 5: Solve for x
    x = 7,912,440,372.38/136,999.50
  6. Step 6: Final answer
    x = 57,755.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.