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Finding the Fourth Proportional to 181,978,629.40, 272,967,944.10 and 79,941,957.40

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Solution

The fourth proportional to 181,978,629.40, 272,967,944.10 and 79,941,957.40 is: 119,912,936.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,978,629.40 : 272,967,944.10 = 79,941,957.40 : x
  2. Step 2: Convert to fraction form
    181,978,629.40/272,967,944.10 = 79,941,957.40/x
  3. Step 3: Cross multiply
    181,978,629.40x = 272,967,944.10 × 79,941,957.40
  4. Step 4: Simplify right side
    181,978,629.40x = 21,821,591,758,807,784
  5. Step 5: Solve for x
    x = 21,821,591,758,807,784/181,978,629.40
  6. Step 6: Final answer
    x = 119,912,936.10

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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.