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Finding the Fourth Proportional to 134,772, 186,045.14 and 87,048.62

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Solution

The fourth proportional to 134,772, 186,045.14 and 87,048.62 is: 120,165.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,772 : 186,045.14 = 87,048.62 : x
  2. Step 2: Convert to fraction form
    134,772/186,045.14 = 87,048.62/x
  3. Step 3: Cross multiply
    134,772x = 186,045.14 × 87,048.62
  4. Step 4: Simplify right side
    134,772x = 16,194,972,694.71
  5. Step 5: Solve for x
    x = 16,194,972,694.71/134,772
  6. Step 6: Final answer
    x = 120,165.71

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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.