Home / 129,235.40-193,622.70-105,734.60

Finding the Fourth Proportional to 129,235.40, 193,622.70 and 105,734.60

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Solution

The fourth proportional to 129,235.40, 193,622.70 and 105,734.60 is: 158,413.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,235.40 : 193,622.70 = 105,734.60 : x
  2. Step 2: Convert to fraction form
    129,235.40/193,622.70 = 105,734.60/x
  3. Step 3: Cross multiply
    129,235.40x = 193,622.70 × 105,734.60
  4. Step 4: Simplify right side
    129,235.40x = 20,472,618,735.42
  5. Step 5: Solve for x
    x = 20,472,618,735.42/129,235.40
  6. Step 6: Final answer
    x = 158,413.40

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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.