Home / 123,679,408.80-185,519,113.20-77,762,906.40

Finding the Fourth Proportional to 123,679,408.80, 185,519,113.20 and 77,762,906.40

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Solution

The fourth proportional to 123,679,408.80, 185,519,113.20 and 77,762,906.40 is: 116,644,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,679,408.80 : 185,519,113.20 = 77,762,906.40 : x
  2. Step 2: Convert to fraction form
    123,679,408.80/185,519,113.20 = 77,762,906.40/x
  3. Step 3: Cross multiply
    123,679,408.80x = 185,519,113.20 × 77,762,906.40
  4. Step 4: Simplify right side
    123,679,408.80x = 14,426,505,435,182,604
  5. Step 5: Solve for x
    x = 14,426,505,435,182,604/123,679,408.80
  6. Step 6: Final answer
    x = 116,644,359.60

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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.