Home / 154,911.99-213,777.94-86,928.81

Finding the Fourth Proportional to 154,911.99, 213,777.94 and 86,928.81

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Solution

The fourth proportional to 154,911.99, 213,777.94 and 86,928.81 is: 119,961.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,911.99 : 213,777.94 = 86,928.81 : x
  2. Step 2: Convert to fraction form
    154,911.99/213,777.94 = 86,928.81/x
  3. Step 3: Cross multiply
    154,911.99x = 213,777.94 × 86,928.81
  4. Step 4: Simplify right side
    154,911.99x = 18,583,461,928.45
  5. Step 5: Solve for x
    x = 18,583,461,928.45/154,911.99
  6. Step 6: Final answer
    x = 119,961.42

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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.