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Finding the Fourth Proportional to 201,995.68, 278,812.56 and 117,131.68

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Solution

The fourth proportional to 201,995.68, 278,812.56 and 117,131.68 is: 161,675.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,995.68 : 278,812.56 = 117,131.68 : x
  2. Step 2: Convert to fraction form
    201,995.68/278,812.56 = 117,131.68/x
  3. Step 3: Cross multiply
    201,995.68x = 278,812.56 × 117,131.68
  4. Step 4: Simplify right side
    201,995.68x = 32,657,783,557.90
  5. Step 5: Solve for x
    x = 32,657,783,557.90/201,995.68
  6. Step 6: Final answer
    x = 161,675.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.