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Finding the Fourth Proportional to 121,229.64, 181,840.17 and 36,986.40

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Solution

The fourth proportional to 121,229.64, 181,840.17 and 36,986.40 is: 55,478.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,229.64 : 181,840.17 = 36,986.40 : x
  2. Step 2: Convert to fraction form
    121,229.64/181,840.17 = 36,986.40/x
  3. Step 3: Cross multiply
    121,229.64x = 181,840.17 × 36,986.40
  4. Step 4: Simplify right side
    121,229.64x = 6,725,613,263.69
  5. Step 5: Solve for x
    x = 6,725,613,263.69/121,229.64
  6. Step 6: Final answer
    x = 55,478.29

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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.