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Finding the Fourth Proportional to 156,413.76, 215,851.04 and 84,793.76

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Solution

The fourth proportional to 156,413.76, 215,851.04 and 84,793.76 is: 117,015.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,413.76 : 215,851.04 = 84,793.76 : x
  2. Step 2: Convert to fraction form
    156,413.76/215,851.04 = 84,793.76/x
  3. Step 3: Cross multiply
    156,413.76x = 215,851.04 × 84,793.76
  4. Step 4: Simplify right side
    156,413.76x = 18,302,821,281.51
  5. Step 5: Solve for x
    x = 18,302,821,281.51/156,413.76
  6. Step 6: Final answer
    x = 117,015.42

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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.