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Finding the Fourth Proportional to 163,081.78, 225,108.12 and 102,753.52

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Solution

The fourth proportional to 163,081.78, 225,108.12 and 102,753.52 is: 141,834.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,081.78 : 225,108.12 = 102,753.52 : x
  2. Step 2: Convert to fraction form
    163,081.78/225,108.12 = 102,753.52/x
  3. Step 3: Cross multiply
    163,081.78x = 225,108.12 × 102,753.52
  4. Step 4: Simplify right side
    163,081.78x = 23,130,651,710.58
  5. Step 5: Solve for x
    x = 23,130,651,710.58/163,081.78
  6. Step 6: Final answer
    x = 141,834.68

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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.