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Finding the Fourth Proportional to 163,574.88, 225,732.06 and 90,978.44

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Solution

The fourth proportional to 163,574.88, 225,732.06 and 90,978.44 is: 125,549.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,574.88 : 225,732.06 = 90,978.44 : x
  2. Step 2: Convert to fraction form
    163,574.88/225,732.06 = 90,978.44/x
  3. Step 3: Cross multiply
    163,574.88x = 225,732.06 × 90,978.44
  4. Step 4: Simplify right side
    163,574.88x = 20,536,749,548.13
  5. Step 5: Solve for x
    x = 20,536,749,548.13/163,574.88
  6. Step 6: Final answer
    x = 125,549.53

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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.