Home / 121,147.30-181,550.84-103,285.58

Finding the Fourth Proportional to 121,147.30, 181,550.84 and 103,285.58

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Solution

The fourth proportional to 121,147.30, 181,550.84 and 103,285.58 is: 154,783.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,147.30 : 181,550.84 = 103,285.58 : x
  2. Step 2: Convert to fraction form
    121,147.30/181,550.84 = 103,285.58/x
  3. Step 3: Cross multiply
    121,147.30x = 181,550.84 × 103,285.58
  4. Step 4: Simplify right side
    121,147.30x = 18,751,583,808.89
  5. Step 5: Solve for x
    x = 18,751,583,808.89/121,147.30
  6. Step 6: Final answer
    x = 154,783.34

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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.