Home / 211,932.69-317,849.72-78,875.61

Finding the Fourth Proportional to 211,932.69, 317,849.72 and 78,875.61

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Solution

The fourth proportional to 211,932.69, 317,849.72 and 78,875.61 is: 118,295.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,932.69 : 317,849.72 = 78,875.61 : x
  2. Step 2: Convert to fraction form
    211,932.69/317,849.72 = 78,875.61/x
  3. Step 3: Cross multiply
    211,932.69x = 317,849.72 × 78,875.61
  4. Step 4: Simplify right side
    211,932.69x = 25,070,590,158.95
  5. Step 5: Solve for x
    x = 25,070,590,158.95/211,932.69
  6. Step 6: Final answer
    x = 118,295.06

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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.