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Finding the Fourth Proportional to 129,950,408.40, 194,978,100.60 and 57,181,045.20

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Solution

The fourth proportional to 129,950,408.40, 194,978,100.60 and 57,181,045.20 is: 85,794,663.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,950,408.40 : 194,978,100.60 = 57,181,045.20 : x
  2. Step 2: Convert to fraction form
    129,950,408.40/194,978,100.60 = 57,181,045.20/x
  3. Step 3: Cross multiply
    129,950,408.40x = 194,978,100.60 × 57,181,045.20
  4. Step 4: Simplify right side
    129,950,408.40x = 11,149,051,583,418,748
  5. Step 5: Solve for x
    x = 11,149,051,583,418,748/129,950,408.40
  6. Step 6: Final answer
    x = 85,794,663.68

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.