Home / 154,313.21-212,956.76-86,328.61

Finding the Fourth Proportional to 154,313.21, 212,956.76 and 86,328.61

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Solution

The fourth proportional to 154,313.21, 212,956.76 and 86,328.61 is: 119,136.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,313.21 : 212,956.76 = 86,328.61 : x
  2. Step 2: Convert to fraction form
    154,313.21/212,956.76 = 86,328.61/x
  3. Step 3: Cross multiply
    154,313.21x = 212,956.76 × 86,328.61
  4. Step 4: Simplify right side
    154,313.21x = 18,384,260,764.33
  5. Step 5: Solve for x
    x = 18,384,260,764.33/154,313.21
  6. Step 6: Final answer
    x = 119,136.01

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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.