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Finding the Fourth Proportional to 147,879, 204,058.40 and 90,534.49

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Solution

The fourth proportional to 147,879, 204,058.40 and 90,534.49 is: 124,928.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,879 : 204,058.40 = 90,534.49 : x
  2. Step 2: Convert to fraction form
    147,879/204,058.40 = 90,534.49/x
  3. Step 3: Cross multiply
    147,879x = 204,058.40 × 90,534.49
  4. Step 4: Simplify right side
    147,879x = 18,474,322,211.40
  5. Step 5: Solve for x
    x = 18,474,322,211.40/147,879
  6. Step 6: Final answer
    x = 124,928.64

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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.