Home / 259,860.15-389,827.13-79,960.50

Finding the Fourth Proportional to 259,860.15, 389,827.13 and 79,960.50

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Solution

The fourth proportional to 259,860.15, 389,827.13 and 79,960.50 is: 119,952.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,860.15 : 389,827.13 = 79,960.50 : x
  2. Step 2: Convert to fraction form
    259,860.15/389,827.13 = 79,960.50/x
  3. Step 3: Cross multiply
    259,860.15x = 389,827.13 × 79,960.50
  4. Step 4: Simplify right side
    259,860.15x = 31,170,771,828.56
  5. Step 5: Solve for x
    x = 31,170,771,828.56/259,860.15
  6. Step 6: Final answer
    x = 119,952.10

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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.