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Finding the Fourth Proportional to 163,603.10, 225,766.50 and 91,987.22

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Solution

The fourth proportional to 163,603.10, 225,766.50 and 91,987.22 is: 126,939.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,603.10 : 225,766.50 = 91,987.22 : x
  2. Step 2: Convert to fraction form
    163,603.10/225,766.50 = 91,987.22/x
  3. Step 3: Cross multiply
    163,603.10x = 225,766.50 × 91,987.22
  4. Step 4: Simplify right side
    163,603.10x = 20,767,632,704.13
  5. Step 5: Solve for x
    x = 20,767,632,704.13/163,603.10
  6. Step 6: Final answer
    x = 126,939.11

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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.