Home / 190,403.57-285,304.92-70,295.21

Finding the Fourth Proportional to 190,403.57, 285,304.92 and 70,295.21

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Solution

The fourth proportional to 190,403.57, 285,304.92 and 70,295.21 is: 105,331.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,403.57 : 285,304.92 = 70,295.21 : x
  2. Step 2: Convert to fraction form
    190,403.57/285,304.92 = 70,295.21/x
  3. Step 3: Cross multiply
    190,403.57x = 285,304.92 × 70,295.21
  4. Step 4: Simplify right side
    190,403.57x = 20,055,567,838.91
  5. Step 5: Solve for x
    x = 20,055,567,838.91/190,403.57
  6. Step 6: Final answer
    x = 105,331.89

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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.