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Finding the Fourth Proportional to 108,290, 162,118.25 and 63,173.40

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Solution

The fourth proportional to 108,290, 162,118.25 and 63,173.40 is: 94,575.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,290 : 162,118.25 = 63,173.40 : x
  2. Step 2: Convert to fraction form
    108,290/162,118.25 = 63,173.40/x
  3. Step 3: Cross multiply
    108,290x = 162,118.25 × 63,173.40
  4. Step 4: Simplify right side
    108,290x = 10,241,561,054.55
  5. Step 5: Solve for x
    x = 10,241,561,054.55/108,290
  6. Step 6: Final answer
    x = 94,575.32

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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.