Home / 126,109,947-189,219,531.60-67,749,532.15

Finding the Fourth Proportional to 126,109,947, 189,219,531.60 and 67,749,532.15

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Solution

The fourth proportional to 126,109,947, 189,219,531.60 and 67,749,532.15 is: 101,653,636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,109,947 : 189,219,531.60 = 67,749,532.15 : x
  2. Step 2: Convert to fraction form
    126,109,947/189,219,531.60 = 67,749,532.15/x
  3. Step 3: Cross multiply
    126,109,947x = 189,219,531.60 × 67,749,532.15
  4. Step 4: Simplify right side
    126,109,947x = 12,819,534,739,542,142
  5. Step 5: Solve for x
    x = 12,819,534,739,542,142/126,109,947
  6. Step 6: Final answer
    x = 101,653,636.72

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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.