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Finding the Fourth Proportional to 147,737.50, 203,878.30 and 80,669.50

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Solution

The fourth proportional to 147,737.50, 203,878.30 and 80,669.50 is: 111,324.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,737.50 : 203,878.30 = 80,669.50 : x
  2. Step 2: Convert to fraction form
    147,737.50/203,878.30 = 80,669.50/x
  3. Step 3: Cross multiply
    147,737.50x = 203,878.30 × 80,669.50
  4. Step 4: Simplify right side
    147,737.50x = 16,446,760,521.85
  5. Step 5: Solve for x
    x = 16,446,760,521.85/147,737.50
  6. Step 6: Final answer
    x = 111,324.21

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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.