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Finding the Fourth Proportional to 121,119, 181,684.98 and 38,019.48

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Solution

The fourth proportional to 121,119, 181,684.98 and 38,019.48 is: 57,031.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,119 : 181,684.98 = 38,019.48 : x
  2. Step 2: Convert to fraction form
    121,119/181,684.98 = 38,019.48/x
  3. Step 3: Cross multiply
    121,119x = 181,684.98 × 38,019.48
  4. Step 4: Simplify right side
    121,119x = 6,907,568,463.41
  5. Step 5: Solve for x
    x = 6,907,568,463.41/121,119
  6. Step 6: Final answer
    x = 57,031.25

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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.