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Finding the Fourth Proportional to 121,101, 181,660.81 and 36,868.39

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Solution

The fourth proportional to 121,101, 181,660.81 and 36,868.39 is: 55,305.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,101 : 181,660.81 = 36,868.39 : x
  2. Step 2: Convert to fraction form
    121,101/181,660.81 = 36,868.39/x
  3. Step 3: Cross multiply
    121,101x = 181,660.81 × 36,868.39
  4. Step 4: Simplify right side
    121,101x = 6,697,541,590.80
  5. Step 5: Solve for x
    x = 6,697,541,590.80/121,101
  6. Step 6: Final answer
    x = 55,305.42

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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.