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Finding the Fourth Proportional to 117.03, 175.80 and 90.03

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Solution

The fourth proportional to 117.03, 175.80 and 90.03 is: 135.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.03 : 175.80 = 90.03 : x
  2. Step 2: Convert to fraction form
    117.03/175.80 = 90.03/x
  3. Step 3: Cross multiply
    117.03x = 175.80 × 90.03
  4. Step 4: Simplify right side
    117.03x = 15,827.27
  5. Step 5: Solve for x
    x = 15,827.27/117.03
  6. Step 6: Final answer
    x = 135.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.