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Finding the Fourth Proportional to 131,809.15, 197,750.63 and 52,978.73

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Solution

The fourth proportional to 131,809.15, 197,750.63 and 52,978.73 is: 79,482.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,809.15 : 197,750.63 = 52,978.73 : x
  2. Step 2: Convert to fraction form
    131,809.15/197,750.63 = 52,978.73/x
  3. Step 3: Cross multiply
    131,809.15x = 197,750.63 × 52,978.73
  4. Step 4: Simplify right side
    131,809.15x = 10,476,577,234.10
  5. Step 5: Solve for x
    x = 10,476,577,234.10/131,809.15
  6. Step 6: Final answer
    x = 79,482.93

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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.