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Finding the Fourth Proportional to 102,550.60, 153,825.90 and 90,800.20

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Solution

The fourth proportional to 102,550.60, 153,825.90 and 90,800.20 is: 136,200.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,550.60 : 153,825.90 = 90,800.20 : x
  2. Step 2: Convert to fraction form
    102,550.60/153,825.90 = 90,800.20/x
  3. Step 3: Cross multiply
    102,550.60x = 153,825.90 × 90,800.20
  4. Step 4: Simplify right side
    102,550.60x = 13,967,422,485.18
  5. Step 5: Solve for x
    x = 13,967,422,485.18/102,550.60
  6. Step 6: Final answer
    x = 136,200.30

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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.