Home / 90,825.20-136,237.80-28,495.60

Finding the Fourth Proportional to 90,825.20, 136,237.80 and 28,495.60

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Solution

The fourth proportional to 90,825.20, 136,237.80 and 28,495.60 is: 42,743.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,825.20 : 136,237.80 = 28,495.60 : x
  2. Step 2: Convert to fraction form
    90,825.20/136,237.80 = 28,495.60/x
  3. Step 3: Cross multiply
    90,825.20x = 136,237.80 × 28,495.60
  4. Step 4: Simplify right side
    90,825.20x = 3,882,177,853.68
  5. Step 5: Solve for x
    x = 3,882,177,853.68/90,825.20
  6. Step 6: Final answer
    x = 42,743.40

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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.