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Finding the Fourth Proportional to 134,612.88, 185,764.68 and 74,186

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Solution

The fourth proportional to 134,612.88, 185,764.68 and 74,186 is: 102,376.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,612.88 : 185,764.68 = 74,186 : x
  2. Step 2: Convert to fraction form
    134,612.88/185,764.68 = 74,186/x
  3. Step 3: Cross multiply
    134,612.88x = 185,764.68 × 74,186
  4. Step 4: Simplify right side
    134,612.88x = 13,781,138,550.48
  5. Step 5: Solve for x
    x = 13,781,138,550.48/134,612.88
  6. Step 6: Final answer
    x = 102,376.08

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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.