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Finding the Fourth Proportional to 163,171.73, 225,173.52 and 90,570.42

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Solution

The fourth proportional to 163,171.73, 225,173.52 and 90,570.42 is: 124,985.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,171.73 : 225,173.52 = 90,570.42 : x
  2. Step 2: Convert to fraction form
    163,171.73/225,173.52 = 90,570.42/x
  3. Step 3: Cross multiply
    163,171.73x = 225,173.52 × 90,570.42
  4. Step 4: Simplify right side
    163,171.73x = 20,394,060,279.28
  5. Step 5: Solve for x
    x = 20,394,060,279.28/163,171.73
  6. Step 6: Final answer
    x = 124,985.25

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1.5x scale

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.