Home / 90,773,136.70-135,451,715.87-80,990,510.74

Finding the Fourth Proportional to 90,773,136.70, 135,451,715.87 and 80,990,510.74

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Solution

The fourth proportional to 90,773,136.70, 135,451,715.87 and 80,990,510.74 is: 120,854,076.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,773,136.70 : 135,451,715.87 = 80,990,510.74 : x
  2. Step 2: Convert to fraction form
    90,773,136.70/135,451,715.87 = 80,990,510.74/x
  3. Step 3: Cross multiply
    90,773,136.70x = 135,451,715.87 × 80,990,510.74
  4. Step 4: Simplify right side
    90,773,136.70x = 10,970,303,648,920,664
  5. Step 5: Solve for x
    x = 10,970,303,648,920,664/90,773,136.70
  6. Step 6: Final answer
    x = 120,854,076.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.