Home / 213,075.10-319,612.65-79,959.70

Finding the Fourth Proportional to 213,075.10, 319,612.65 and 79,959.70

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Solution

The fourth proportional to 213,075.10, 319,612.65 and 79,959.70 is: 119,939.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,075.10 : 319,612.65 = 79,959.70 : x
  2. Step 2: Convert to fraction form
    213,075.10/319,612.65 = 79,959.70/x
  3. Step 3: Cross multiply
    213,075.10x = 319,612.65 × 79,959.70
  4. Step 4: Simplify right side
    213,075.10x = 25,556,131,610.21
  5. Step 5: Solve for x
    x = 25,556,131,610.21/213,075.10
  6. Step 6: Final answer
    x = 119,939.55

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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.