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Finding the Fourth Proportional to 188,887.78, 260,669.64 and 102,851.20

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Solution

The fourth proportional to 188,887.78, 260,669.64 and 102,851.20 is: 141,937.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,887.78 : 260,669.64 = 102,851.20 : x
  2. Step 2: Convert to fraction form
    188,887.78/260,669.64 = 102,851.20/x
  3. Step 3: Cross multiply
    188,887.78x = 260,669.64 × 102,851.20
  4. Step 4: Simplify right side
    188,887.78x = 26,810,185,277.57
  5. Step 5: Solve for x
    x = 26,810,185,277.57/188,887.78
  6. Step 6: Final answer
    x = 141,937.11

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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.