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Finding the Fourth Proportional to 121,146.70, 181,720.05 and 36,906.70

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Solution

The fourth proportional to 121,146.70, 181,720.05 and 36,906.70 is: 55,360.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,146.70 : 181,720.05 = 36,906.70 : x
  2. Step 2: Convert to fraction form
    121,146.70/181,720.05 = 36,906.70/x
  3. Step 3: Cross multiply
    121,146.70x = 181,720.05 × 36,906.70
  4. Step 4: Simplify right side
    121,146.70x = 6,706,687,369.34
  5. Step 5: Solve for x
    x = 6,706,687,369.34/121,146.70
  6. Step 6: Final answer
    x = 55,360.05

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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.