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Finding the Fourth Proportional to 115,202.59, 158,980.30 and 64,218.56

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Solution

The fourth proportional to 115,202.59, 158,980.30 and 64,218.56 is: 88,622.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,202.59 : 158,980.30 = 64,218.56 : x
  2. Step 2: Convert to fraction form
    115,202.59/158,980.30 = 64,218.56/x
  3. Step 3: Cross multiply
    115,202.59x = 158,980.30 × 64,218.56
  4. Step 4: Simplify right side
    115,202.59x = 10,209,485,934.37
  5. Step 5: Solve for x
    x = 10,209,485,934.37/115,202.59
  6. Step 6: Final answer
    x = 88,622.02

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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.