Home / 148,624.04-205,099.80-80,640.56

Finding the Fourth Proportional to 148,624.04, 205,099.80 and 80,640.56

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Solution

The fourth proportional to 148,624.04, 205,099.80 and 80,640.56 is: 111,283.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,624.04 : 205,099.80 = 80,640.56 : x
  2. Step 2: Convert to fraction form
    148,624.04/205,099.80 = 80,640.56/x
  3. Step 3: Cross multiply
    148,624.04x = 205,099.80 × 80,640.56
  4. Step 4: Simplify right side
    148,624.04x = 16,539,362,727.89
  5. Step 5: Solve for x
    x = 16,539,362,727.89/148,624.04
  6. Step 6: Final answer
    x = 111,283.23

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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.