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Finding the Fourth Proportional to 138,536.93, 191,180.99 and 74,874.74

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Solution

The fourth proportional to 138,536.93, 191,180.99 and 74,874.74 is: 103,327.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,536.93 : 191,180.99 = 74,874.74 : x
  2. Step 2: Convert to fraction form
    138,536.93/191,180.99 = 74,874.74/x
  3. Step 3: Cross multiply
    138,536.93x = 191,180.99 × 74,874.74
  4. Step 4: Simplify right side
    138,536.93x = 14,314,626,150.47
  5. Step 5: Solve for x
    x = 14,314,626,150.47/138,536.93
  6. Step 6: Final answer
    x = 103,327.15

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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.