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Finding the Fourth Proportional to 134,837, 186,074.91 and 74,407.62

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Solution

The fourth proportional to 134,837, 186,074.91 and 74,407.62 is: 102,682.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,837 : 186,074.91 = 74,407.62 : x
  2. Step 2: Convert to fraction form
    134,837/186,074.91 = 74,407.62/x
  3. Step 3: Cross multiply
    134,837x = 186,074.91 × 74,407.62
  4. Step 4: Simplify right side
    134,837x = 13,845,391,194.81
  5. Step 5: Solve for x
    x = 13,845,391,194.81/134,837
  6. Step 6: Final answer
    x = 102,682.43

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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.