Home / 127,770,128.52-176,322,777.44-72,771,102.60

Finding the Fourth Proportional to 127,770,128.52, 176,322,777.44 and 72,771,102.60

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Solution

The fourth proportional to 127,770,128.52, 176,322,777.44 and 72,771,102.60 is: 100,424,121.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,770,128.52 : 176,322,777.44 = 72,771,102.60 : x
  2. Step 2: Convert to fraction form
    127,770,128.52/176,322,777.44 = 72,771,102.60/x
  3. Step 3: Cross multiply
    127,770,128.52x = 176,322,777.44 × 72,771,102.60
  4. Step 4: Simplify right side
    127,770,128.52x = 12,831,202,927,803,204
  5. Step 5: Solve for x
    x = 12,831,202,927,803,204/127,770,128.52
  6. Step 6: Final answer
    x = 100,424,121.63

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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.