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Finding the Fourth Proportional to 110,847.60, 166,271.40 and 81,323.10

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Solution

The fourth proportional to 110,847.60, 166,271.40 and 81,323.10 is: 121,984.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,847.60 : 166,271.40 = 81,323.10 : x
  2. Step 2: Convert to fraction form
    110,847.60/166,271.40 = 81,323.10/x
  3. Step 3: Cross multiply
    110,847.60x = 166,271.40 × 81,323.10
  4. Step 4: Simplify right side
    110,847.60x = 13,521,705,689.34
  5. Step 5: Solve for x
    x = 13,521,705,689.34/110,847.60
  6. Step 6: Final answer
    x = 121,984.65

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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.