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Finding the Fourth Proportional to 125,855.85, 188,783.78 and 121,017.45

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Solution

The fourth proportional to 125,855.85, 188,783.78 and 121,017.45 is: 181,526.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,855.85 : 188,783.78 = 121,017.45 : x
  2. Step 2: Convert to fraction form
    125,855.85/188,783.78 = 121,017.45/x
  3. Step 3: Cross multiply
    125,855.85x = 188,783.78 × 121,017.45
  4. Step 4: Simplify right side
    125,855.85x = 22,846,131,051.87
  5. Step 5: Solve for x
    x = 22,846,131,051.87/125,855.85
  6. Step 6: Final answer
    x = 181,526.18

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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.