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Finding the Fourth Proportional to 121,353.48, 182,112.23 and 42,468.39

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Solution

The fourth proportional to 121,353.48, 182,112.23 and 42,468.39 is: 63,731.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,353.48 : 182,112.23 = 42,468.39 : x
  2. Step 2: Convert to fraction form
    121,353.48/182,112.23 = 42,468.39/x
  3. Step 3: Cross multiply
    121,353.48x = 182,112.23 × 42,468.39
  4. Step 4: Simplify right side
    121,353.48x = 7,734,012,995.07
  5. Step 5: Solve for x
    x = 7,734,012,995.07/121,353.48
  6. Step 6: Final answer
    x = 63,731.28

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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.