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Finding the Fourth Proportional to 108,999.20, 163,412.40 and 59,751.20

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Solution

The fourth proportional to 108,999.20, 163,412.40 and 59,751.20 is: 89,579.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,999.20 : 163,412.40 = 59,751.20 : x
  2. Step 2: Convert to fraction form
    108,999.20/163,412.40 = 59,751.20/x
  3. Step 3: Cross multiply
    108,999.20x = 163,412.40 × 59,751.20
  4. Step 4: Simplify right side
    108,999.20x = 9,764,086,994.88
  5. Step 5: Solve for x
    x = 9,764,086,994.88/108,999.20
  6. Step 6: Final answer
    x = 89,579.44

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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.