Home / 99,813,890.60-149,720,835.90-85,201,231.40

Finding the Fourth Proportional to 99,813,890.60, 149,720,835.90 and 85,201,231.40

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Solution

The fourth proportional to 99,813,890.60, 149,720,835.90 and 85,201,231.40 is: 127,801,847.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,813,890.60 : 149,720,835.90 = 85,201,231.40 : x
  2. Step 2: Convert to fraction form
    99,813,890.60/149,720,835.90 = 85,201,231.40/x
  3. Step 3: Cross multiply
    99,813,890.60x = 149,720,835.90 × 85,201,231.40
  4. Step 4: Simplify right side
    99,813,890.60x = 12,756,399,584,917,328
  5. Step 5: Solve for x
    x = 12,756,399,584,917,328/99,813,890.60
  6. Step 6: Final answer
    x = 127,801,847.10

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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.