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Finding the Fourth Proportional to 115,157.60, 158,914.48 and 64,170.56

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Solution

The fourth proportional to 115,157.60, 158,914.48 and 64,170.56 is: 88,553.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,157.60 : 158,914.48 = 64,170.56 : x
  2. Step 2: Convert to fraction form
    115,157.60/158,914.48 = 64,170.56/x
  3. Step 3: Cross multiply
    115,157.60x = 158,914.48 × 64,170.56
  4. Step 4: Simplify right side
    115,157.60x = 10,197,631,173.71
  5. Step 5: Solve for x
    x = 10,197,631,173.71/115,157.60
  6. Step 6: Final answer
    x = 88,553.70

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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.