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Finding the Fourth Proportional to 108,293.40, 162,415.80 and 71,114.40

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Solution

The fourth proportional to 108,293.40, 162,415.80 and 71,114.40 is: 106,655.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,293.40 : 162,415.80 = 71,114.40 : x
  2. Step 2: Convert to fraction form
    108,293.40/162,415.80 = 71,114.40/x
  3. Step 3: Cross multiply
    108,293.40x = 162,415.80 × 71,114.40
  4. Step 4: Simplify right side
    108,293.40x = 11,550,102,167.52
  5. Step 5: Solve for x
    x = 11,550,102,167.52/108,293.40
  6. Step 6: Final answer
    x = 106,655.64

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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.