Home / 189,689.41-261,467.32-128,416.29

Finding the Fourth Proportional to 189,689.41, 261,467.32 and 128,416.29

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Solution

The fourth proportional to 189,689.41, 261,467.32 and 128,416.29 is: 177,008.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,689.41 : 261,467.32 = 128,416.29 : x
  2. Step 2: Convert to fraction form
    189,689.41/261,467.32 = 128,416.29/x
  3. Step 3: Cross multiply
    189,689.41x = 261,467.32 × 128,416.29
  4. Step 4: Simplify right side
    189,689.41x = 33,576,663,190.64
  5. Step 5: Solve for x
    x = 33,576,663,190.64/189,689.41
  6. Step 6: Final answer
    x = 177,008.63

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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.