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Finding the Fourth Proportional to 97,736.80, 146,410.80 and 90,738.40

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Solution

The fourth proportional to 97,736.80, 146,410.80 and 90,738.40 is: 135,927.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,736.80 : 146,410.80 = 90,738.40 : x
  2. Step 2: Convert to fraction form
    97,736.80/146,410.80 = 90,738.40/x
  3. Step 3: Cross multiply
    97,736.80x = 146,410.80 × 90,738.40
  4. Step 4: Simplify right side
    97,736.80x = 13,285,081,734.72
  5. Step 5: Solve for x
    x = 13,285,081,734.72/97,736.80
  6. Step 6: Final answer
    x = 135,927.12

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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.