Home / 108,977.80-163,434.30-42,379.60

Finding the Fourth Proportional to 108,977.80, 163,434.30 and 42,379.60

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Solution

The fourth proportional to 108,977.80, 163,434.30 and 42,379.60 is: 63,556.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,977.80 : 163,434.30 = 42,379.60 : x
  2. Step 2: Convert to fraction form
    108,977.80/163,434.30 = 42,379.60/x
  3. Step 3: Cross multiply
    108,977.80x = 163,434.30 × 42,379.60
  4. Step 4: Simplify right side
    108,977.80x = 6,926,280,260.28
  5. Step 5: Solve for x
    x = 6,926,280,260.28/108,977.80
  6. Step 6: Final answer
    x = 63,556.80

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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.