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Finding the Fourth Proportional to 180,172.89, 248,663.39 and 103,690.46

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Solution

The fourth proportional to 180,172.89, 248,663.39 and 103,690.46 is: 143,107.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,172.89 : 248,663.39 = 103,690.46 : x
  2. Step 2: Convert to fraction form
    180,172.89/248,663.39 = 103,690.46/x
  3. Step 3: Cross multiply
    180,172.89x = 248,663.39 × 103,690.46
  4. Step 4: Simplify right side
    180,172.89x = 25,784,021,397.47
  5. Step 5: Solve for x
    x = 25,784,021,397.47/180,172.89
  6. Step 6: Final answer
    x = 143,107.11

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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.