Home / 100,320,272.70-150,480,409.05-85,014,771.90

Finding the Fourth Proportional to 100,320,272.70, 150,480,409.05 and 85,014,771.90

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Solution

The fourth proportional to 100,320,272.70, 150,480,409.05 and 85,014,771.90 is: 127,522,157.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,320,272.70 : 150,480,409.05 = 85,014,771.90 : x
  2. Step 2: Convert to fraction form
    100,320,272.70/150,480,409.05 = 85,014,771.90/x
  3. Step 3: Cross multiply
    100,320,272.70x = 150,480,409.05 × 85,014,771.90
  4. Step 4: Simplify right side
    100,320,272.70x = 12,793,057,650,804,448
  5. Step 5: Solve for x
    x = 12,793,057,650,804,448/100,320,272.70
  6. Step 6: Final answer
    x = 127,522,157.85

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1.5x scale

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.