Home / 108,911.40-163,367.10-68,962.20

Finding the Fourth Proportional to 108,911.40, 163,367.10 and 68,962.20

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Solution

The fourth proportional to 108,911.40, 163,367.10 and 68,962.20 is: 103,443.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,911.40 : 163,367.10 = 68,962.20 : x
  2. Step 2: Convert to fraction form
    108,911.40/163,367.10 = 68,962.20/x
  3. Step 3: Cross multiply
    108,911.40x = 163,367.10 × 68,962.20
  4. Step 4: Simplify right side
    108,911.40x = 11,266,154,623.62
  5. Step 5: Solve for x
    x = 11,266,154,623.62/108,911.40
  6. Step 6: Final answer
    x = 103,443.30

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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.