Home / 190,631.58-263,103.12-105,775.98

Finding the Fourth Proportional to 190,631.58, 263,103.12 and 105,775.98

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Solution

The fourth proportional to 190,631.58, 263,103.12 and 105,775.98 is: 145,988.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,631.58 : 263,103.12 = 105,775.98 : x
  2. Step 2: Convert to fraction form
    190,631.58/263,103.12 = 105,775.98/x
  3. Step 3: Cross multiply
    190,631.58x = 263,103.12 × 105,775.98
  4. Step 4: Simplify right side
    190,631.58x = 27,829,990,359.06
  5. Step 5: Solve for x
    x = 27,829,990,359.06/190,631.58
  6. Step 6: Final answer
    x = 145,988.35

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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.