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Finding the Fourth Proportional to 163,571.13, 225,726.89 and 90,974.68

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Solution

The fourth proportional to 163,571.13, 225,726.89 and 90,974.68 is: 125,544.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,571.13 : 225,726.89 = 90,974.68 : x
  2. Step 2: Convert to fraction form
    163,571.13/225,726.89 = 90,974.68/x
  3. Step 3: Cross multiply
    163,571.13x = 225,726.89 × 90,974.68
  4. Step 4: Simplify right side
    163,571.13x = 20,535,430,565.95
  5. Step 5: Solve for x
    x = 20,535,430,565.95/163,571.13
  6. Step 6: Final answer
    x = 125,544.35

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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.