Home / 131,172,811.80-196,759,217.70-121,319,064.60

Finding the Fourth Proportional to 131,172,811.80, 196,759,217.70 and 121,319,064.60

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Solution

The fourth proportional to 131,172,811.80, 196,759,217.70 and 121,319,064.60 is: 181,978,596.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,172,811.80 : 196,759,217.70 = 121,319,064.60 : x
  2. Step 2: Convert to fraction form
    131,172,811.80/196,759,217.70 = 121,319,064.60/x
  3. Step 3: Cross multiply
    131,172,811.80x = 196,759,217.70 × 121,319,064.60
  4. Step 4: Simplify right side
    131,172,811.80x = 23,870,644,242,791,760
  5. Step 5: Solve for x
    x = 23,870,644,242,791,760/131,172,811.80
  6. Step 6: Final answer
    x = 181,978,596.90

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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.