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Finding the Fourth Proportional to 121,092.40, 181,638.60 and 83,767.60

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Solution

The fourth proportional to 121,092.40, 181,638.60 and 83,767.60 is: 125,651.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,092.40 : 181,638.60 = 83,767.60 : x
  2. Step 2: Convert to fraction form
    121,092.40/181,638.60 = 83,767.60/x
  3. Step 3: Cross multiply
    121,092.40x = 181,638.60 × 83,767.60
  4. Step 4: Simplify right side
    121,092.40x = 15,215,429,589.36
  5. Step 5: Solve for x
    x = 15,215,429,589.36/121,092.40
  6. Step 6: Final answer
    x = 125,651.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.