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Finding the Fourth Proportional to 121,095.63, 181,671.12 and 36,867.78

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Solution

The fourth proportional to 121,095.63, 181,671.12 and 36,867.78 is: 55,310.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,095.63 : 181,671.12 = 36,867.78 : x
  2. Step 2: Convert to fraction form
    121,095.63/181,671.12 = 36,867.78/x
  3. Step 3: Cross multiply
    121,095.63x = 181,671.12 × 36,867.78
  4. Step 4: Simplify right side
    121,095.63x = 6,697,810,884.51
  5. Step 5: Solve for x
    x = 6,697,810,884.51/121,095.63
  6. Step 6: Final answer
    x = 55,310.10

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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.