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Finding the Fourth Proportional to 117.64, 175.78 and 93.34

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Solution

The fourth proportional to 117.64, 175.78 and 93.34 is: 139.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.64 : 175.78 = 93.34 : x
  2. Step 2: Convert to fraction form
    117.64/175.78 = 93.34/x
  3. Step 3: Cross multiply
    117.64x = 175.78 × 93.34
  4. Step 4: Simplify right side
    117.64x = 16,407.31
  5. Step 5: Solve for x
    x = 16,407.31/117.64
  6. Step 6: Final answer
    x = 139.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.