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Finding the Fourth Proportional to 131,327.70, 196,699.95 and 107,999.70

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Solution

The fourth proportional to 131,327.70, 196,699.95 and 107,999.70 is: 161,759.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,327.70 : 196,699.95 = 107,999.70 : x
  2. Step 2: Convert to fraction form
    131,327.70/196,699.95 = 107,999.70/x
  3. Step 3: Cross multiply
    131,327.70x = 196,699.95 × 107,999.70
  4. Step 4: Simplify right side
    131,327.70x = 21,243,535,590.02
  5. Step 5: Solve for x
    x = 21,243,535,590.02/131,327.70
  6. Step 6: Final answer
    x = 161,759.75

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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.