Home / 156,531,413.92-215,964,910.20-90,427,793.02

Finding the Fourth Proportional to 156,531,413.92, 215,964,910.20 and 90,427,793.02

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Solution

The fourth proportional to 156,531,413.92, 215,964,910.20 and 90,427,793.02 is: 124,762,370.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,531,413.92 : 215,964,910.20 = 90,427,793.02 : x
  2. Step 2: Convert to fraction form
    156,531,413.92/215,964,910.20 = 90,427,793.02/x
  3. Step 3: Cross multiply
    156,531,413.92x = 215,964,910.20 × 90,427,793.02
  4. Step 4: Simplify right side
    156,531,413.92x = 19,529,230,199,148,484
  5. Step 5: Solve for x
    x = 19,529,230,199,148,484/156,531,413.92
  6. Step 6: Final answer
    x = 124,762,370.12

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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.