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Finding the Fourth Proportional to 163,987.68, 225,826.56 and 142,467.60

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Solution

The fourth proportional to 163,987.68, 225,826.56 and 142,467.60 is: 196,191.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,987.68 : 225,826.56 = 142,467.60 : x
  2. Step 2: Convert to fraction form
    163,987.68/225,826.56 = 142,467.60/x
  3. Step 3: Cross multiply
    163,987.68x = 225,826.56 × 142,467.60
  4. Step 4: Simplify right side
    163,987.68x = 32,172,968,019.46
  5. Step 5: Solve for x
    x = 32,172,968,019.46/163,987.68
  6. Step 6: Final answer
    x = 196,191.37

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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.