Home / 213,580.01-320,271.39-78,610.17

Finding the Fourth Proportional to 213,580.01, 320,271.39 and 78,610.17

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Solution

The fourth proportional to 213,580.01, 320,271.39 and 78,610.17 is: 117,878.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,580.01 : 320,271.39 = 78,610.17 : x
  2. Step 2: Convert to fraction form
    213,580.01/320,271.39 = 78,610.17/x
  3. Step 3: Cross multiply
    213,580.01x = 320,271.39 × 78,610.17
  4. Step 4: Simplify right side
    213,580.01x = 25,176,588,610.56
  5. Step 5: Solve for x
    x = 25,176,588,610.56/213,580.01
  6. Step 6: Final answer
    x = 117,878.96

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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.