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Finding the Fourth Proportional to 115,216.75, 158,999.52 and 64,915.75

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Solution

The fourth proportional to 115,216.75, 158,999.52 and 64,915.75 is: 89,583.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,216.75 : 158,999.52 = 64,915.75 : x
  2. Step 2: Convert to fraction form
    115,216.75/158,999.52 = 64,915.75/x
  3. Step 3: Cross multiply
    115,216.75x = 158,999.52 × 64,915.75
  4. Step 4: Simplify right side
    115,216.75x = 10,321,573,090.44
  5. Step 5: Solve for x
    x = 10,321,573,090.44/115,216.75
  6. Step 6: Final answer
    x = 89,583.96

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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.