Home / 186,650.12-279,809.22-72,771.68

Finding the Fourth Proportional to 186,650.12, 279,809.22 and 72,771.68

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Solution

The fourth proportional to 186,650.12, 279,809.22 and 72,771.68 is: 109,092.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,650.12 : 279,809.22 = 72,771.68 : x
  2. Step 2: Convert to fraction form
    186,650.12/279,809.22 = 72,771.68/x
  3. Step 3: Cross multiply
    186,650.12x = 279,809.22 × 72,771.68
  4. Step 4: Simplify right side
    186,650.12x = 20,362,187,018.89
  5. Step 5: Solve for x
    x = 20,362,187,018.89/186,650.12
  6. Step 6: Final answer
    x = 109,092.82

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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.