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Finding the Fourth Proportional to 100,844.20, 151,266.30 and 86,847.40

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Solution

The fourth proportional to 100,844.20, 151,266.30 and 86,847.40 is: 130,271.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,844.20 : 151,266.30 = 86,847.40 : x
  2. Step 2: Convert to fraction form
    100,844.20/151,266.30 = 86,847.40/x
  3. Step 3: Cross multiply
    100,844.20x = 151,266.30 × 86,847.40
  4. Step 4: Simplify right side
    100,844.20x = 13,137,084,862.62
  5. Step 5: Solve for x
    x = 13,137,084,862.62/100,844.20
  6. Step 6: Final answer
    x = 130,271.10

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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.