Home / 189,653.40-261,767.70-109,123.20

Finding the Fourth Proportional to 189,653.40, 261,767.70 and 109,123.20

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Solution

The fourth proportional to 189,653.40, 261,767.70 and 109,123.20 is: 150,616.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,653.40 : 261,767.70 = 109,123.20 : x
  2. Step 2: Convert to fraction form
    189,653.40/261,767.70 = 109,123.20/x
  3. Step 3: Cross multiply
    189,653.40x = 261,767.70 × 109,123.20
  4. Step 4: Simplify right side
    189,653.40x = 28,564,929,080.64
  5. Step 5: Solve for x
    x = 28,564,929,080.64/189,653.40
  6. Step 6: Final answer
    x = 150,616.49

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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.