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Finding the Fourth Proportional to 137,618.96, 189,954.48 and 89,879.72

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Solution

The fourth proportional to 137,618.96, 189,954.48 and 89,879.72 is: 124,060.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,618.96 : 189,954.48 = 89,879.72 : x
  2. Step 2: Convert to fraction form
    137,618.96/189,954.48 = 89,879.72/x
  3. Step 3: Cross multiply
    137,618.96x = 189,954.48 × 89,879.72
  4. Step 4: Simplify right side
    137,618.96x = 17,073,055,475.15
  5. Step 5: Solve for x
    x = 17,073,055,475.15/137,618.96
  6. Step 6: Final answer
    x = 124,060.34

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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.