Home / 120,921,107,989.56-181,381,016,109.78-31,384,036,007.16

Finding the Fourth Proportional to 120,921,107,989.56, 181,381,016,109.78 and 31,384,036,007.16

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Solution

The fourth proportional to 120,921,107,989.56, 181,381,016,109.78 and 31,384,036,007.16 is: 47,075,886,379.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,921,107,989.56 : 181,381,016,109.78 = 31,384,036,007.16 : x
  2. Step 2: Convert to fraction form
    120,921,107,989.56/181,381,016,109.78 = 31,384,036,007.16/x
  3. Step 3: Cross multiply
    120,921,107,989.56x = 181,381,016,109.78 × 31,384,036,007.16
  4. Step 4: Simplify right side
    120,921,107,989.56x = 5,692,468,340,604,603,990,016
  5. Step 5: Solve for x
    x = 5,692,468,340,604,603,990,016/120,921,107,989.56
  6. Step 6: Final answer
    x = 47,075,886,379.54

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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.