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Finding the Fourth Proportional to 140,524.80, 210,787.20 and 125,762.55

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Solution

The fourth proportional to 140,524.80, 210,787.20 and 125,762.55 is: 188,643.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,524.80 : 210,787.20 = 125,762.55 : x
  2. Step 2: Convert to fraction form
    140,524.80/210,787.20 = 125,762.55/x
  3. Step 3: Cross multiply
    140,524.80x = 210,787.20 × 125,762.55
  4. Step 4: Simplify right side
    140,524.80x = 26,509,135,779.36
  5. Step 5: Solve for x
    x = 26,509,135,779.36/140,524.80
  6. Step 6: Final answer
    x = 188,643.83

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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.