Home / 126,325,712.60-189,488,568.90-72,578,000.60

Finding the Fourth Proportional to 126,325,712.60, 189,488,568.90 and 72,578,000.60

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Solution

The fourth proportional to 126,325,712.60, 189,488,568.90 and 72,578,000.60 is: 108,867,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,325,712.60 : 189,488,568.90 = 72,578,000.60 : x
  2. Step 2: Convert to fraction form
    126,325,712.60/189,488,568.90 = 72,578,000.60/x
  3. Step 3: Cross multiply
    126,325,712.60x = 189,488,568.90 × 72,578,000.60
  4. Step 4: Simplify right side
    126,325,712.60x = 13,752,701,467,317,340
  5. Step 5: Solve for x
    x = 13,752,701,467,317,340/126,325,712.60
  6. Step 6: Final answer
    x = 108,867,000.90

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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.