Home / 213,131.04-319,612.86-79,938.69

Finding the Fourth Proportional to 213,131.04, 319,612.86 and 79,938.69

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Solution

The fourth proportional to 213,131.04, 319,612.86 and 79,938.69 is: 119,876.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,131.04 : 319,612.86 = 79,938.69 : x
  2. Step 2: Convert to fraction form
    213,131.04/319,612.86 = 79,938.69/x
  3. Step 3: Cross multiply
    213,131.04x = 319,612.86 × 79,938.69
  4. Step 4: Simplify right side
    213,131.04x = 25,549,433,335.55
  5. Step 5: Solve for x
    x = 25,549,433,335.55/213,131.04
  6. Step 6: Final answer
    x = 119,876.64

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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.