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Finding the Fourth Proportional to 123,193.83, 169,994.80 and 90,945.60

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Solution

The fourth proportional to 123,193.83, 169,994.80 and 90,945.60 is: 125,495.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,193.83 : 169,994.80 = 90,945.60 : x
  2. Step 2: Convert to fraction form
    123,193.83/169,994.80 = 90,945.60/x
  3. Step 3: Cross multiply
    123,193.83x = 169,994.80 × 90,945.60
  4. Step 4: Simplify right side
    123,193.83x = 15,460,278,628.15
  5. Step 5: Solve for x
    x = 15,460,278,628.15/123,193.83
  6. Step 6: Final answer
    x = 125,495.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.