Home / 190,855.90-286,393.20-72,612.10

Finding the Fourth Proportional to 190,855.90, 286,393.20 and 72,612.10

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Solution

The fourth proportional to 190,855.90, 286,393.20 and 72,612.10 is: 108,959.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,855.90 : 286,393.20 = 72,612.10 : x
  2. Step 2: Convert to fraction form
    190,855.90/286,393.20 = 72,612.10/x
  3. Step 3: Cross multiply
    190,855.90x = 286,393.20 × 72,612.10
  4. Step 4: Simplify right side
    190,855.90x = 20,795,611,677.72
  5. Step 5: Solve for x
    x = 20,795,611,677.72/190,855.90
  6. Step 6: Final answer
    x = 108,959.75

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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.