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Finding the Fourth Proportional to 163,151.34, 225,145.42 and 90,550

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Solution

The fourth proportional to 163,151.34, 225,145.42 and 90,550 is: 124,957.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,151.34 : 225,145.42 = 90,550 : x
  2. Step 2: Convert to fraction form
    163,151.34/225,145.42 = 90,550/x
  3. Step 3: Cross multiply
    163,151.34x = 225,145.42 × 90,550
  4. Step 4: Simplify right side
    163,151.34x = 20,386,917,781
  5. Step 5: Solve for x
    x = 20,386,917,781/163,151.34
  6. Step 6: Final answer
    x = 124,957.10

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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.