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Finding the Fourth Proportional to 161,723,206.40, 242,419,472.40 and 79,715,955.20

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Solution

The fourth proportional to 161,723,206.40, 242,419,472.40 and 79,715,955.20 is: 119,492,435.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,723,206.40 : 242,419,472.40 = 79,715,955.20 : x
  2. Step 2: Convert to fraction form
    161,723,206.40/242,419,472.40 = 79,715,955.20/x
  3. Step 3: Cross multiply
    161,723,206.40x = 242,419,472.40 × 79,715,955.20
  4. Step 4: Simplify right side
    161,723,206.40x = 19,324,699,801,446,036
  5. Step 5: Solve for x
    x = 19,324,699,801,446,036/161,723,206.40
  6. Step 6: Final answer
    x = 119,492,435.45

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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.