Home / 120,783.15-181,206.06-45,904.59

Finding the Fourth Proportional to 120,783.15, 181,206.06 and 45,904.59

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Solution

The fourth proportional to 120,783.15, 181,206.06 and 45,904.59 is: 68,868.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,783.15 : 181,206.06 = 45,904.59 : x
  2. Step 2: Convert to fraction form
    120,783.15/181,206.06 = 45,904.59/x
  3. Step 3: Cross multiply
    120,783.15x = 181,206.06 × 45,904.59
  4. Step 4: Simplify right side
    120,783.15x = 8,318,189,889.82
  5. Step 5: Solve for x
    x = 8,318,189,889.82/120,783.15
  6. Step 6: Final answer
    x = 68,868.79

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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.