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Finding the Fourth Proportional to 140,559.80, 210,936.90 and 101,145.20

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Solution

The fourth proportional to 140,559.80, 210,936.90 and 101,145.20 is: 151,787.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,559.80 : 210,936.90 = 101,145.20 : x
  2. Step 2: Convert to fraction form
    140,559.80/210,936.90 = 101,145.20/x
  3. Step 3: Cross multiply
    140,559.80x = 210,936.90 × 101,145.20
  4. Step 4: Simplify right side
    140,559.80x = 21,335,254,937.88
  5. Step 5: Solve for x
    x = 21,335,254,937.88/140,559.80
  6. Step 6: Final answer
    x = 151,787.74

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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.