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Finding the Fourth Proportional to 144,104.80, 216,027.60 and 91,487.20

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Solution

The fourth proportional to 144,104.80, 216,027.60 and 91,487.20 is: 137,148.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,104.80 : 216,027.60 = 91,487.20 : x
  2. Step 2: Convert to fraction form
    144,104.80/216,027.60 = 91,487.20/x
  3. Step 3: Cross multiply
    144,104.80x = 216,027.60 × 91,487.20
  4. Step 4: Simplify right side
    144,104.80x = 19,763,760,246.72
  5. Step 5: Solve for x
    x = 19,763,760,246.72/144,104.80
  6. Step 6: Final answer
    x = 137,148.52

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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.