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Finding the Fourth Proportional to 169,905.60, 255,004.20 and 75,281.40

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Solution

The fourth proportional to 169,905.60, 255,004.20 and 75,281.40 is: 112,986.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,905.60 : 255,004.20 = 75,281.40 : x
  2. Step 2: Convert to fraction form
    169,905.60/255,004.20 = 75,281.40/x
  3. Step 3: Cross multiply
    169,905.60x = 255,004.20 × 75,281.40
  4. Step 4: Simplify right side
    169,905.60x = 19,197,073,181.88
  5. Step 5: Solve for x
    x = 19,197,073,181.88/169,905.60
  6. Step 6: Final answer
    x = 112,986.70

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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.