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Finding the Fourth Proportional to 110,007.20, 164,978.40 and 43,425.20

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Solution

The fourth proportional to 110,007.20, 164,978.40 and 43,425.20 is: 65,125.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,007.20 : 164,978.40 = 43,425.20 : x
  2. Step 2: Convert to fraction form
    110,007.20/164,978.40 = 43,425.20/x
  3. Step 3: Cross multiply
    110,007.20x = 164,978.40 × 43,425.20
  4. Step 4: Simplify right side
    110,007.20x = 7,164,220,015.68
  5. Step 5: Solve for x
    x = 7,164,220,015.68/110,007.20
  6. Step 6: Final answer
    x = 65,125.01

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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.