Home / 190,291.20-285,436.80-127,622.40

Finding the Fourth Proportional to 190,291.20, 285,436.80 and 127,622.40

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Solution

The fourth proportional to 190,291.20, 285,436.80 and 127,622.40 is: 191,433.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,291.20 : 285,436.80 = 127,622.40 : x
  2. Step 2: Convert to fraction form
    190,291.20/285,436.80 = 127,622.40/x
  3. Step 3: Cross multiply
    190,291.20x = 285,436.80 × 127,622.40
  4. Step 4: Simplify right side
    190,291.20x = 36,428,129,464.32
  5. Step 5: Solve for x
    x = 36,428,129,464.32/190,291.20
  6. Step 6: Final answer
    x = 191,433.60

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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.