Home / 171,185.19-256,838.55-76,406.74

Finding the Fourth Proportional to 171,185.19, 256,838.55 and 76,406.74

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Solution

The fourth proportional to 171,185.19, 256,838.55 and 76,406.74 is: 114,637.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,185.19 : 256,838.55 = 76,406.74 : x
  2. Step 2: Convert to fraction form
    171,185.19/256,838.55 = 76,406.74/x
  3. Step 3: Cross multiply
    171,185.19x = 256,838.55 × 76,406.74
  4. Step 4: Simplify right side
    171,185.19x = 19,624,196,311.83
  5. Step 5: Solve for x
    x = 19,624,196,311.83/171,185.19
  6. Step 6: Final answer
    x = 114,637.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.