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Finding the Fourth Proportional to 115,367.49, 159,279.21 and 88,458.28

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Solution

The fourth proportional to 115,367.49, 159,279.21 and 88,458.28 is: 122,127.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,367.49 : 159,279.21 = 88,458.28 : x
  2. Step 2: Convert to fraction form
    115,367.49/159,279.21 = 88,458.28/x
  3. Step 3: Cross multiply
    115,367.49x = 159,279.21 × 88,458.28
  4. Step 4: Simplify right side
    115,367.49x = 14,089,564,558.16
  5. Step 5: Solve for x
    x = 14,089,564,558.16/115,367.49
  6. Step 6: Final answer
    x = 122,127.69

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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.