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Finding the Fourth Proportional to 134,770, 186,042.38 and 87,046.62

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Solution

The fourth proportional to 134,770, 186,042.38 and 87,046.62 is: 120,162.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,770 : 186,042.38 = 87,046.62 : x
  2. Step 2: Convert to fraction form
    134,770/186,042.38 = 87,046.62/x
  3. Step 3: Cross multiply
    134,770x = 186,042.38 × 87,046.62
  4. Step 4: Simplify right side
    134,770x = 16,194,360,355.76
  5. Step 5: Solve for x
    x = 16,194,360,355.76/134,770
  6. Step 6: Final answer
    x = 120,162.95

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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.