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Finding the Fourth Proportional to 90,846.80, 127,289.20 and 90,846.80

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Solution

The fourth proportional to 90,846.80, 127,289.20 and 90,846.80 is: 127,289.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,846.80 : 127,289.20 = 90,846.80 : x
  2. Step 2: Convert to fraction form
    90,846.80/127,289.20 = 90,846.80/x
  3. Step 3: Cross multiply
    90,846.80x = 127,289.20 × 90,846.80
  4. Step 4: Simplify right side
    90,846.80x = 11,563,816,494.56
  5. Step 5: Solve for x
    x = 11,563,816,494.56/90,846.80
  6. Step 6: Final answer
    x = 127,289.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.