Home / 131,472.90-197,209.35-81,609.30

Finding the Fourth Proportional to 131,472.90, 197,209.35 and 81,609.30

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Solution

The fourth proportional to 131,472.90, 197,209.35 and 81,609.30 is: 122,413.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,472.90 : 197,209.35 = 81,609.30 : x
  2. Step 2: Convert to fraction form
    131,472.90/197,209.35 = 81,609.30/x
  3. Step 3: Cross multiply
    131,472.90x = 197,209.35 × 81,609.30
  4. Step 4: Simplify right side
    131,472.90x = 16,094,117,006.96
  5. Step 5: Solve for x
    x = 16,094,117,006.96/131,472.90
  6. Step 6: Final answer
    x = 122,413.95

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1.5x scale

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.