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Finding the Fourth Proportional to 139,463.02, 192,459 and 75,800.80

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Solution

The fourth proportional to 139,463.02, 192,459 and 75,800.80 is: 104,605.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,463.02 : 192,459 = 75,800.80 : x
  2. Step 2: Convert to fraction form
    139,463.02/192,459 = 75,800.80/x
  3. Step 3: Cross multiply
    139,463.02x = 192,459 × 75,800.80
  4. Step 4: Simplify right side
    139,463.02x = 14,588,546,167.20
  5. Step 5: Solve for x
    x = 14,588,546,167.20/139,463.02
  6. Step 6: Final answer
    x = 104,605.12

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Why These Related Problems?

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