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Finding the Fourth Proportional to 108,291, 162,119.74 and 63,174.40

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Solution

The fourth proportional to 108,291, 162,119.74 and 63,174.40 is: 94,576.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,291 : 162,119.74 = 63,174.40 : x
  2. Step 2: Convert to fraction form
    108,291/162,119.74 = 63,174.40/x
  3. Step 3: Cross multiply
    108,291x = 162,119.74 × 63,174.40
  4. Step 4: Simplify right side
    108,291x = 10,241,817,302.66
  5. Step 5: Solve for x
    x = 10,241,817,302.66/108,291
  6. Step 6: Final answer
    x = 94,576.81

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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.