Home / 109,391.21-164,021.15-42,751.95

Finding the Fourth Proportional to 109,391.21, 164,021.15 and 42,751.95

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Solution

The fourth proportional to 109,391.21, 164,021.15 and 42,751.95 is: 64,102.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,391.21 : 164,021.15 = 42,751.95 : x
  2. Step 2: Convert to fraction form
    109,391.21/164,021.15 = 42,751.95/x
  3. Step 3: Cross multiply
    109,391.21x = 164,021.15 × 42,751.95
  4. Step 4: Simplify right side
    109,391.21x = 7,012,224,418.16
  5. Step 5: Solve for x
    x = 7,012,224,418.16/109,391.21
  6. Step 6: Final answer
    x = 64,102.27

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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.