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Finding the Fourth Proportional to 139,882.47, 193,037.85 and 76,220.30

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Solution

The fourth proportional to 139,882.47, 193,037.85 and 76,220.30 is: 105,184.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,882.47 : 193,037.85 = 76,220.30 : x
  2. Step 2: Convert to fraction form
    139,882.47/193,037.85 = 76,220.30/x
  3. Step 3: Cross multiply
    139,882.47x = 193,037.85 × 76,220.30
  4. Step 4: Simplify right side
    139,882.47x = 14,713,401,873.17
  5. Step 5: Solve for x
    x = 14,713,401,873.17/139,882.47
  6. Step 6: Final answer
    x = 105,184.03

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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.