Home / 136,579.80-188,468.30-76,145.72

Finding the Fourth Proportional to 136,579.80, 188,468.30 and 76,145.72

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Solution

The fourth proportional to 136,579.80, 188,468.30 and 76,145.72 is: 105,074.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,579.80 : 188,468.30 = 76,145.72 : x
  2. Step 2: Convert to fraction form
    136,579.80/188,468.30 = 76,145.72/x
  3. Step 3: Cross multiply
    136,579.80x = 188,468.30 × 76,145.72
  4. Step 4: Simplify right side
    136,579.80x = 14,351,054,400.68
  5. Step 5: Solve for x
    x = 14,351,054,400.68/136,579.80
  6. Step 6: Final answer
    x = 105,074.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.