Home / 105,899.78-146,162.40-65,631.44

Finding the Fourth Proportional to 105,899.78, 146,162.40 and 65,631.44

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Solution

The fourth proportional to 105,899.78, 146,162.40 and 65,631.44 is: 90,584.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,899.78 : 146,162.40 = 65,631.44 : x
  2. Step 2: Convert to fraction form
    105,899.78/146,162.40 = 65,631.44/x
  3. Step 3: Cross multiply
    105,899.78x = 146,162.40 × 65,631.44
  4. Step 4: Simplify right side
    105,899.78x = 9,592,848,785.86
  5. Step 5: Solve for x
    x = 9,592,848,785.86/105,899.78
  6. Step 6: Final answer
    x = 90,584.22

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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.