Home / 90,683,380.40-136,290,491.40-79,004,865.20

Finding the Fourth Proportional to 90,683,380.40, 136,290,491.40 and 79,004,865.20

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Solution

The fourth proportional to 90,683,380.40, 136,290,491.40 and 79,004,865.20 is: 118,738,536.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,683,380.40 : 136,290,491.40 = 79,004,865.20 : x
  2. Step 2: Convert to fraction form
    90,683,380.40/136,290,491.40 = 79,004,865.20/x
  3. Step 3: Cross multiply
    90,683,380.40x = 136,290,491.40 × 79,004,865.20
  4. Step 4: Simplify right side
    90,683,380.40x = 10,767,611,901,098,760
  5. Step 5: Solve for x
    x = 10,767,611,901,098,760/90,683,380.40
  6. Step 6: Final answer
    x = 118,738,536.80

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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.