Home / 131,922.80-197,999.40-105,561.20

Finding the Fourth Proportional to 131,922.80, 197,999.40 and 105,561.20

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Solution

The fourth proportional to 131,922.80, 197,999.40 and 105,561.20 is: 158,433.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,922.80 : 197,999.40 = 105,561.20 : x
  2. Step 2: Convert to fraction form
    131,922.80/197,999.40 = 105,561.20/x
  3. Step 3: Cross multiply
    131,922.80x = 197,999.40 × 105,561.20
  4. Step 4: Simplify right side
    131,922.80x = 20,901,054,263.28
  5. Step 5: Solve for x
    x = 20,901,054,263.28/131,922.80
  6. Step 6: Final answer
    x = 158,433.98

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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.