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Finding the Fourth Proportional to 148,704.03, 205,212.11 and 80,721.13

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Solution

The fourth proportional to 148,704.03, 205,212.11 and 80,721.13 is: 111,395.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,704.03 : 205,212.11 = 80,721.13 : x
  2. Step 2: Convert to fraction form
    148,704.03/205,212.11 = 80,721.13/x
  3. Step 3: Cross multiply
    148,704.03x = 205,212.11 × 80,721.13
  4. Step 4: Simplify right side
    148,704.03x = 16,564,953,408.88
  5. Step 5: Solve for x
    x = 16,564,953,408.88/148,704.03
  6. Step 6: Final answer
    x = 111,395.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.