Home / 213,068.13-319,519.23-79,875.78

Finding the Fourth Proportional to 213,068.13, 319,519.23 and 79,875.78

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Solution

The fourth proportional to 213,068.13, 319,519.23 and 79,875.78 is: 119,782.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,068.13 : 319,519.23 = 79,875.78 : x
  2. Step 2: Convert to fraction form
    213,068.13/319,519.23 = 79,875.78/x
  3. Step 3: Cross multiply
    213,068.13x = 319,519.23 × 79,875.78
  4. Step 4: Simplify right side
    213,068.13x = 25,521,847,721.25
  5. Step 5: Solve for x
    x = 25,521,847,721.25/213,068.13
  6. Step 6: Final answer
    x = 119,782.57

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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.