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Finding the Fourth Proportional to 121,214.76, 181,850.76 and 38,108.76

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Solution

The fourth proportional to 121,214.76, 181,850.76 and 38,108.76 is: 57,172.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,214.76 : 181,850.76 = 38,108.76 : x
  2. Step 2: Convert to fraction form
    121,214.76/181,850.76 = 38,108.76/x
  3. Step 3: Cross multiply
    121,214.76x = 181,850.76 × 38,108.76
  4. Step 4: Simplify right side
    121,214.76x = 6,930,106,968.66
  5. Step 5: Solve for x
    x = 6,930,106,968.66/121,214.76
  6. Step 6: Final answer
    x = 57,172.14

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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.