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Finding the Fourth Proportional to 121,979, 182,802.12 and 74,610.56

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Solution

The fourth proportional to 121,979, 182,802.12 and 74,610.56 is: 111,814.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,979 : 182,802.12 = 74,610.56 : x
  2. Step 2: Convert to fraction form
    121,979/182,802.12 = 74,610.56/x
  3. Step 3: Cross multiply
    121,979x = 182,802.12 × 74,610.56
  4. Step 4: Simplify right side
    121,979x = 13,638,968,542.39
  5. Step 5: Solve for x
    x = 13,638,968,542.39/121,979
  6. Step 6: Final answer
    x = 111,814.07

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1.5x scale

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.