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Finding the Fourth Proportional to 108,475.78, 162,652.75 and 74,320.11

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Solution

The fourth proportional to 108,475.78, 162,652.75 and 74,320.11 is: 111,438.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,475.78 : 162,652.75 = 74,320.11 : x
  2. Step 2: Convert to fraction form
    108,475.78/162,652.75 = 74,320.11/x
  3. Step 3: Cross multiply
    108,475.78x = 162,652.75 × 74,320.11
  4. Step 4: Simplify right side
    108,475.78x = 12,088,370,271.80
  5. Step 5: Solve for x
    x = 12,088,370,271.80/108,475.78
  6. Step 6: Final answer
    x = 111,438.43

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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.