Home / 154,297.35-212,928.89-86,313.56

Finding the Fourth Proportional to 154,297.35, 212,928.89 and 86,313.56

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Solution

The fourth proportional to 154,297.35, 212,928.89 and 86,313.56 is: 119,111.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,297.35 : 212,928.89 = 86,313.56 : x
  2. Step 2: Convert to fraction form
    154,297.35/212,928.89 = 86,313.56/x
  3. Step 3: Cross multiply
    154,297.35x = 212,928.89 × 86,313.56
  4. Step 4: Simplify right side
    154,297.35x = 18,378,649,026.54
  5. Step 5: Solve for x
    x = 18,378,649,026.54/154,297.35
  6. Step 6: Final answer
    x = 119,111.89

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1.5x scale

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.