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Finding the Fourth Proportional to 115,200.59, 158,977.54 and 64,216.56

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Solution

The fourth proportional to 115,200.59, 158,977.54 and 64,216.56 is: 88,619.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,200.59 : 158,977.54 = 64,216.56 : x
  2. Step 2: Convert to fraction form
    115,200.59/158,977.54 = 64,216.56/x
  3. Step 3: Cross multiply
    115,200.59x = 158,977.54 × 64,216.56
  4. Step 4: Simplify right side
    115,200.59x = 10,208,990,414.98
  5. Step 5: Solve for x
    x = 10,208,990,414.98/115,200.59
  6. Step 6: Final answer
    x = 88,619.25

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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.