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Finding the Fourth Proportional to 90,768.60, 136,152.90 and 44,112.60

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Solution

The fourth proportional to 90,768.60, 136,152.90 and 44,112.60 is: 66,168.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,768.60 : 136,152.90 = 44,112.60 : x
  2. Step 2: Convert to fraction form
    90,768.60/136,152.90 = 44,112.60/x
  3. Step 3: Cross multiply
    90,768.60x = 136,152.90 × 44,112.60
  4. Step 4: Simplify right side
    90,768.60x = 6,006,058,416.54
  5. Step 5: Solve for x
    x = 6,006,058,416.54/90,768.60
  6. Step 6: Final answer
    x = 66,168.90

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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.