Home / 90,660,683.70-135,991,025.55-76,630,641.30

Finding the Fourth Proportional to 90,660,683.70, 135,991,025.55 and 76,630,641.30

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Solution

The fourth proportional to 90,660,683.70, 135,991,025.55 and 76,630,641.30 is: 114,945,961.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,660,683.70 : 135,991,025.55 = 76,630,641.30 : x
  2. Step 2: Convert to fraction form
    90,660,683.70/135,991,025.55 = 76,630,641.30/x
  3. Step 3: Cross multiply
    90,660,683.70x = 135,991,025.55 × 76,630,641.30
  4. Step 4: Simplify right side
    90,660,683.70x = 10,421,079,498,941,186
  5. Step 5: Solve for x
    x = 10,421,079,498,941,186/90,660,683.70
  6. Step 6: Final answer
    x = 114,945,961.95

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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.