Home / 190,209.28-262,488.80-105,326.40

Finding the Fourth Proportional to 190,209.28, 262,488.80 and 105,326.40

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Solution

The fourth proportional to 190,209.28, 262,488.80 and 105,326.40 is: 145,350.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,209.28 : 262,488.80 = 105,326.40 : x
  2. Step 2: Convert to fraction form
    190,209.28/262,488.80 = 105,326.40/x
  3. Step 3: Cross multiply
    190,209.28x = 262,488.80 × 105,326.40
  4. Step 4: Simplify right side
    190,209.28x = 27,647,000,344.32
  5. Step 5: Solve for x
    x = 27,647,000,344.32/190,209.28
  6. Step 6: Final answer
    x = 145,350.43

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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.