Home / 156,413.40-215,850.78-84,793.20

Finding the Fourth Proportional to 156,413.40, 215,850.78 and 84,793.20

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Solution

The fourth proportional to 156,413.40, 215,850.78 and 84,793.20 is: 117,014.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,413.40 : 215,850.78 = 84,793.20 : x
  2. Step 2: Convert to fraction form
    156,413.40/215,850.78 = 84,793.20/x
  3. Step 3: Cross multiply
    156,413.40x = 215,850.78 × 84,793.20
  4. Step 4: Simplify right side
    156,413.40x = 18,302,678,358.70
  5. Step 5: Solve for x
    x = 18,302,678,358.70/156,413.40
  6. Step 6: Final answer
    x = 117,014.77

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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.