Home / 185,711.84-256,288.47-105,137.72

Finding the Fourth Proportional to 185,711.84, 256,288.47 and 105,137.72

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Solution

The fourth proportional to 185,711.84, 256,288.47 and 105,137.72 is: 145,093.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,711.84 : 256,288.47 = 105,137.72 : x
  2. Step 2: Convert to fraction form
    185,711.84/256,288.47 = 105,137.72/x
  3. Step 3: Cross multiply
    185,711.84x = 256,288.47 × 105,137.72
  4. Step 4: Simplify right side
    185,711.84x = 26,945,585,398.09
  5. Step 5: Solve for x
    x = 26,945,585,398.09/185,711.84
  6. Step 6: Final answer
    x = 145,093.52

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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.