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Finding the Fourth Proportional to 181,978,043.40, 272,967,065.10 and 120,756,040.20

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Solution

The fourth proportional to 181,978,043.40, 272,967,065.10 and 120,756,040.20 is: 181,134,060.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,978,043.40 : 272,967,065.10 = 120,756,040.20 : x
  2. Step 2: Convert to fraction form
    181,978,043.40/272,967,065.10 = 120,756,040.20/x
  3. Step 3: Cross multiply
    181,978,043.40x = 272,967,065.10 × 120,756,040.20
  4. Step 4: Simplify right side
    181,978,043.40x = 32,962,421,886,491,620
  5. Step 5: Solve for x
    x = 32,962,421,886,491,620/181,978,043.40
  6. Step 6: Final answer
    x = 181,134,060.30

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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.