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Finding the Fourth Proportional to 121,105.79, 181,637.72 and 36,845.54

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Solution

The fourth proportional to 121,105.79, 181,637.72 and 36,845.54 is: 55,261.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,105.79 : 181,637.72 = 36,845.54 : x
  2. Step 2: Convert to fraction form
    121,105.79/181,637.72 = 36,845.54/x
  3. Step 3: Cross multiply
    121,105.79x = 181,637.72 × 36,845.54
  4. Step 4: Simplify right side
    121,105.79x = 6,692,539,877.77
  5. Step 5: Solve for x
    x = 6,692,539,877.77/121,105.79
  6. Step 6: Final answer
    x = 55,261.93

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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.