Home / 213,030.06-319,710.33-80,031.30

Finding the Fourth Proportional to 213,030.06, 319,710.33 and 80,031.30

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Solution

The fourth proportional to 213,030.06, 319,710.33 and 80,031.30 is: 120,109.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,030.06 : 319,710.33 = 80,031.30 : x
  2. Step 2: Convert to fraction form
    213,030.06/319,710.33 = 80,031.30/x
  3. Step 3: Cross multiply
    213,030.06x = 319,710.33 × 80,031.30
  4. Step 4: Simplify right side
    213,030.06x = 25,586,833,333.33
  5. Step 5: Solve for x
    x = 25,586,833,333.33/213,030.06
  6. Step 6: Final answer
    x = 120,109.03

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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.