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Finding the Fourth Proportional to 90,845.80, 127,287.80 and 90,845.80

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Solution

The fourth proportional to 90,845.80, 127,287.80 and 90,845.80 is: 127,287.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,845.80 : 127,287.80 = 90,845.80 : x
  2. Step 2: Convert to fraction form
    90,845.80/127,287.80 = 90,845.80/x
  3. Step 3: Cross multiply
    90,845.80x = 127,287.80 × 90,845.80
  4. Step 4: Simplify right side
    90,845.80x = 11,563,562,021.24
  5. Step 5: Solve for x
    x = 11,563,562,021.24/90,845.80
  6. Step 6: Final answer
    x = 127,287.80

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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.