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Finding the Fourth Proportional to 123,662,706.30, 185,494,059.45 and 120,828,354.30

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Solution

The fourth proportional to 123,662,706.30, 185,494,059.45 and 120,828,354.30 is: 181,242,531.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,662,706.30 : 185,494,059.45 = 120,828,354.30 : x
  2. Step 2: Convert to fraction form
    123,662,706.30/185,494,059.45 = 120,828,354.30/x
  3. Step 3: Cross multiply
    123,662,706.30x = 185,494,059.45 × 120,828,354.30
  4. Step 4: Simplify right side
    123,662,706.30x = 22,412,941,935,769,860
  5. Step 5: Solve for x
    x = 22,412,941,935,769,860/123,662,706.30
  6. Step 6: Final answer
    x = 181,242,531.45

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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.