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Finding the Fourth Proportional to 121,712.76, 182,578.77 and 42,844.68

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Solution

The fourth proportional to 121,712.76, 182,578.77 and 42,844.68 is: 64,270.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,712.76 : 182,578.77 = 42,844.68 : x
  2. Step 2: Convert to fraction form
    121,712.76/182,578.77 = 42,844.68/x
  3. Step 3: Cross multiply
    121,712.76x = 182,578.77 × 42,844.68
  4. Step 4: Simplify right side
    121,712.76x = 7,822,528,975.44
  5. Step 5: Solve for x
    x = 7,822,528,975.44/121,712.76
  6. Step 6: Final answer
    x = 64,270.41

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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.