Home / 190,039.16-285,103.10-55,106.06

Finding the Fourth Proportional to 190,039.16, 285,103.10 and 55,106.06

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Solution

The fourth proportional to 190,039.16, 285,103.10 and 55,106.06 is: 82,671.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,039.16 : 285,103.10 = 55,106.06 : x
  2. Step 2: Convert to fraction form
    190,039.16/285,103.10 = 55,106.06/x
  3. Step 3: Cross multiply
    190,039.16x = 285,103.10 × 55,106.06
  4. Step 4: Simplify right side
    190,039.16x = 15,710,908,534.79
  5. Step 5: Solve for x
    x = 15,710,908,534.79/190,039.16
  6. Step 6: Final answer
    x = 82,671.95

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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.