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Finding the Fourth Proportional to 181,978,674.90, 272,968,012.35 and 79,942,002.90

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Solution

The fourth proportional to 181,978,674.90, 272,968,012.35 and 79,942,002.90 is: 119,913,004.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,978,674.90 : 272,968,012.35 = 79,942,002.90 : x
  2. Step 2: Convert to fraction form
    181,978,674.90/272,968,012.35 = 79,942,002.90/x
  3. Step 3: Cross multiply
    181,978,674.90x = 272,968,012.35 × 79,942,002.90
  4. Step 4: Simplify right side
    181,978,674.90x = 21,821,609,634,890,940
  5. Step 5: Solve for x
    x = 21,821,609,634,890,940/181,978,674.90
  6. Step 6: Final answer
    x = 119,913,004.35

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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.