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Finding the Fourth Proportional to 118,832.70, 163,986.54 and 65,116.56

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Solution

The fourth proportional to 118,832.70, 163,986.54 and 65,116.56 is: 89,859.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,832.70 : 163,986.54 = 65,116.56 : x
  2. Step 2: Convert to fraction form
    118,832.70/163,986.54 = 65,116.56/x
  3. Step 3: Cross multiply
    118,832.70x = 163,986.54 × 65,116.56
  4. Step 4: Simplify right side
    118,832.70x = 10,678,239,371.10
  5. Step 5: Solve for x
    x = 10,678,239,371.10/118,832.70
  6. Step 6: Final answer
    x = 89,859.44

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1.5x scale

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.