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Finding the Fourth Proportional to 13,145,438.70, 19,718,158.05 and 13,145,438.70

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Solution

The fourth proportional to 13,145,438.70, 19,718,158.05 and 13,145,438.70 is: 19,718,158.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145,438.70 : 19,718,158.05 = 13,145,438.70 : x
  2. Step 2: Convert to fraction form
    13,145,438.70/19,718,158.05 = 13,145,438.70/x
  3. Step 3: Cross multiply
    13,145,438.70x = 19,718,158.05 × 13,145,438.70
  4. Step 4: Simplify right side
    13,145,438.70x = 259,203,837,923,186.53
  5. Step 5: Solve for x
    x = 259,203,837,923,186.53/13,145,438.70
  6. Step 6: Final answer
    x = 19,718,158.05

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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.