Home / 154,359.34-212,811.69-111,302.80

Finding the Fourth Proportional to 154,359.34, 212,811.69 and 111,302.80

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Solution

The fourth proportional to 154,359.34, 212,811.69 and 111,302.80 is: 153,450.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,359.34 : 212,811.69 = 111,302.80 : x
  2. Step 2: Convert to fraction form
    154,359.34/212,811.69 = 111,302.80/x
  3. Step 3: Cross multiply
    154,359.34x = 212,811.69 × 111,302.80
  4. Step 4: Simplify right side
    154,359.34x = 23,686,536,969.73
  5. Step 5: Solve for x
    x = 23,686,536,969.73/154,359.34
  6. Step 6: Final answer
    x = 153,450.62

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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.