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Finding the Fourth Proportional to 199,883.84, 275,370.60 and 139,344.32

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Solution

The fourth proportional to 199,883.84, 275,370.60 and 139,344.32 is: 191,968.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,883.84 : 275,370.60 = 139,344.32 : x
  2. Step 2: Convert to fraction form
    199,883.84/275,370.60 = 139,344.32/x
  3. Step 3: Cross multiply
    199,883.84x = 275,370.60 × 139,344.32
  4. Step 4: Simplify right side
    199,883.84x = 38,371,329,004.99
  5. Step 5: Solve for x
    x = 38,371,329,004.99/199,883.84
  6. Step 6: Final answer
    x = 191,968.14

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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.