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Finding the Fourth Proportional to 134,670.74, 185,837.26 and 74,241.90

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Solution

The fourth proportional to 134,670.74, 185,837.26 and 74,241.90 is: 102,449.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,670.74 : 185,837.26 = 74,241.90 : x
  2. Step 2: Convert to fraction form
    134,670.74/185,837.26 = 74,241.90/x
  3. Step 3: Cross multiply
    134,670.74x = 185,837.26 × 74,241.90
  4. Step 4: Simplify right side
    134,670.74x = 13,796,911,273.19
  5. Step 5: Solve for x
    x = 13,796,911,273.19/134,670.74
  6. Step 6: Final answer
    x = 102,449.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.