Home / 126,230,808.40-189,235,620.60-85,709,899.60

Finding the Fourth Proportional to 126,230,808.40, 189,235,620.60 and 85,709,899.60

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Solution

The fourth proportional to 126,230,808.40, 189,235,620.60 and 85,709,899.60 is: 128,489,758.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,230,808.40 : 189,235,620.60 = 85,709,899.60 : x
  2. Step 2: Convert to fraction form
    126,230,808.40/189,235,620.60 = 85,709,899.60/x
  3. Step 3: Cross multiply
    126,230,808.40x = 189,235,620.60 × 85,709,899.60
  4. Step 4: Simplify right side
    126,230,808.40x = 16,219,366,042,369,690
  5. Step 5: Solve for x
    x = 16,219,366,042,369,690/126,230,808.40
  6. Step 6: Final answer
    x = 128,489,758.15

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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.