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Finding the Fourth Proportional to 140,532.80, 210,896.40 and 101,118.20

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Solution

The fourth proportional to 140,532.80, 210,896.40 and 101,118.20 is: 151,747.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,532.80 : 210,896.40 = 101,118.20 : x
  2. Step 2: Convert to fraction form
    140,532.80/210,896.40 = 101,118.20/x
  3. Step 3: Cross multiply
    140,532.80x = 210,896.40 × 101,118.20
  4. Step 4: Simplify right side
    140,532.80x = 21,325,464,354.48
  5. Step 5: Solve for x
    x = 21,325,464,354.48/140,532.80
  6. Step 6: Final answer
    x = 151,747.24

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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.