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Finding the Fourth Proportional to 99,660,143.70, 149,206,780.35 and 99,660,143.70

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Solution

The fourth proportional to 99,660,143.70, 149,206,780.35 and 99,660,143.70 is: 149,206,780.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,660,143.70 : 149,206,780.35 = 99,660,143.70 : x
  2. Step 2: Convert to fraction form
    99,660,143.70/149,206,780.35 = 99,660,143.70/x
  3. Step 3: Cross multiply
    99,660,143.70x = 149,206,780.35 × 99,660,143.70
  4. Step 4: Simplify right side
    99,660,143.70x = 14,869,969,170,695,336
  5. Step 5: Solve for x
    x = 14,869,969,170,695,336/99,660,143.70
  6. Step 6: Final answer
    x = 149,206,780.35

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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.