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Finding the Fourth Proportional to 110,146.52, 165,128.52 and 91,374.68

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Solution

The fourth proportional to 110,146.52, 165,128.52 and 91,374.68 is: 136,986.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,146.52 : 165,128.52 = 91,374.68 : x
  2. Step 2: Convert to fraction form
    110,146.52/165,128.52 = 91,374.68/x
  3. Step 3: Cross multiply
    110,146.52x = 165,128.52 × 91,374.68
  4. Step 4: Simplify right side
    110,146.52x = 15,088,565,673.87
  5. Step 5: Solve for x
    x = 15,088,565,673.87/110,146.52
  6. Step 6: Final answer
    x = 136,986.31

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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.