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Finding the Fourth Proportional to 109.83, 151.68 and 101.32

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Solution

The fourth proportional to 109.83, 151.68 and 101.32 is: 139.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.83 : 151.68 = 101.32 : x
  2. Step 2: Convert to fraction form
    109.83/151.68 = 101.32/x
  3. Step 3: Cross multiply
    109.83x = 151.68 × 101.32
  4. Step 4: Simplify right side
    109.83x = 15,368.22
  5. Step 5: Solve for x
    x = 15,368.22/109.83
  6. Step 6: Final answer
    x = 139.93

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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.