Home / 99,844,163.40-149,766,245.10-72,421,807.80

Finding the Fourth Proportional to 99,844,163.40, 149,766,245.10 and 72,421,807.80

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Solution

The fourth proportional to 99,844,163.40, 149,766,245.10 and 72,421,807.80 is: 108,632,711.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,844,163.40 : 149,766,245.10 = 72,421,807.80 : x
  2. Step 2: Convert to fraction form
    99,844,163.40/149,766,245.10 = 72,421,807.80/x
  3. Step 3: Cross multiply
    99,844,163.40x = 149,766,245.10 × 72,421,807.80
  4. Step 4: Simplify right side
    99,844,163.40x = 10,846,342,217,559,890
  5. Step 5: Solve for x
    x = 10,846,342,217,559,890/99,844,163.40
  6. Step 6: Final answer
    x = 108,632,711.70

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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.