Home / 103,721.76-155,456.28-53,774.33

Finding the Fourth Proportional to 103,721.76, 155,456.28 and 53,774.33

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Solution

The fourth proportional to 103,721.76, 155,456.28 and 53,774.33 is: 80,595.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,721.76 : 155,456.28 = 53,774.33 : x
  2. Step 2: Convert to fraction form
    103,721.76/155,456.28 = 53,774.33/x
  3. Step 3: Cross multiply
    103,721.76x = 155,456.28 × 53,774.33
  4. Step 4: Simplify right side
    103,721.76x = 8,359,556,524.01
  5. Step 5: Solve for x
    x = 8,359,556,524.01/103,721.76
  6. Step 6: Final answer
    x = 80,595.98

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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.