Home / 121,328,760.40-181,993,140.60-115,110,900.70

Finding the Fourth Proportional to 121,328,760.40, 181,993,140.60 and 115,110,900.70

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Solution

The fourth proportional to 121,328,760.40, 181,993,140.60 and 115,110,900.70 is: 172,666,351.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,328,760.40 : 181,993,140.60 = 115,110,900.70 : x
  2. Step 2: Convert to fraction form
    121,328,760.40/181,993,140.60 = 115,110,900.70/x
  3. Step 3: Cross multiply
    121,328,760.40x = 181,993,140.60 × 115,110,900.70
  4. Step 4: Simplify right side
    121,328,760.40x = 20,949,394,335,687,740
  5. Step 5: Solve for x
    x = 20,949,394,335,687,740/121,328,760.40
  6. Step 6: Final answer
    x = 172,666,351.05

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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.