Home / 121,029,721.77-166,998,173.26-72,141,698.73

Finding the Fourth Proportional to 121,029,721.77, 166,998,173.26 and 72,141,698.73

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Solution

The fourth proportional to 121,029,721.77, 166,998,173.26 and 72,141,698.73 is: 99,541,928.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,029,721.77 : 166,998,173.26 = 72,141,698.73 : x
  2. Step 2: Convert to fraction form
    121,029,721.77/166,998,173.26 = 72,141,698.73/x
  3. Step 3: Cross multiply
    121,029,721.77x = 166,998,173.26 × 72,141,698.73
  4. Step 4: Simplify right side
    121,029,721.77x = 12,047,531,903,783,262
  5. Step 5: Solve for x
    x = 12,047,531,903,783,262/121,029,721.77
  6. Step 6: Final answer
    x = 99,541,928.44

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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.