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Finding the Fourth Proportional to 138,882.36, 191,657.58 and 75,220.14

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Solution

The fourth proportional to 138,882.36, 191,657.58 and 75,220.14 is: 103,803.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,882.36 : 191,657.58 = 75,220.14 : x
  2. Step 2: Convert to fraction form
    138,882.36/191,657.58 = 75,220.14/x
  3. Step 3: Cross multiply
    138,882.36x = 191,657.58 × 75,220.14
  4. Step 4: Simplify right side
    138,882.36x = 14,416,509,999.66
  5. Step 5: Solve for x
    x = 14,416,509,999.66/138,882.36
  6. Step 6: Final answer
    x = 103,803.75

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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.