Home / 209,905,525.50-289,655,628.39-120,600,342.78

Finding the Fourth Proportional to 209,905,525.50, 289,655,628.39 and 120,600,342.78

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Solution

The fourth proportional to 209,905,525.50, 289,655,628.39 and 120,600,342.78 is: 166,420,431.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,905,525.50 : 289,655,628.39 = 120,600,342.78 : x
  2. Step 2: Convert to fraction form
    209,905,525.50/289,655,628.39 = 120,600,342.78/x
  3. Step 3: Cross multiply
    209,905,525.50x = 289,655,628.39 × 120,600,342.78
  4. Step 4: Simplify right side
    209,905,525.50x = 34,932,568,071,990,300
  5. Step 5: Solve for x
    x = 34,932,568,071,990,300/209,905,525.50
  6. Step 6: Final answer
    x = 166,420,431.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.