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Finding the Fourth Proportional to 107.04, 147.60 and 79.47

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Solution

The fourth proportional to 107.04, 147.60 and 79.47 is: 109.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.04 : 147.60 = 79.47 : x
  2. Step 2: Convert to fraction form
    107.04/147.60 = 79.47/x
  3. Step 3: Cross multiply
    107.04x = 147.60 × 79.47
  4. Step 4: Simplify right side
    107.04x = 11,729.77
  5. Step 5: Solve for x
    x = 11,729.77/107.04
  6. Step 6: Final answer
    x = 109.58

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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.