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Finding the Fourth Proportional to 199,883.34, 275,369.91 and 139,343.82

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Solution

The fourth proportional to 199,883.34, 275,369.91 and 139,343.82 is: 191,967.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,883.34 : 275,369.91 = 139,343.82 : x
  2. Step 2: Convert to fraction form
    199,883.34/275,369.91 = 139,343.82/x
  3. Step 3: Cross multiply
    199,883.34x = 275,369.91 × 139,343.82
  4. Step 4: Simplify right side
    199,883.34x = 38,371,095,172.46
  5. Step 5: Solve for x
    x = 38,371,095,172.46/199,883.34
  6. Step 6: Final answer
    x = 191,967.45

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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.