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Finding the Fourth Proportional to 169,170.40, 253,755.60 and 139,621.60

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Solution

The fourth proportional to 169,170.40, 253,755.60 and 139,621.60 is: 209,432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,170.40 : 253,755.60 = 139,621.60 : x
  2. Step 2: Convert to fraction form
    169,170.40/253,755.60 = 139,621.60/x
  3. Step 3: Cross multiply
    169,170.40x = 253,755.60 × 139,621.60
  4. Step 4: Simplify right side
    169,170.40x = 35,429,762,880.96
  5. Step 5: Solve for x
    x = 35,429,762,880.96/169,170.40
  6. Step 6: Final answer
    x = 209,432.40

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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.