Finding the Fourth Proportional to 138,319.56, 190,479.33 and 120,162.06
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Solution
The fourth proportional to 138,319.56, 190,479.33 and 120,162.06 is: 165,474.71
Step by Step Solution
- Step 1: Write the proportion equation
138,319.56 : 190,479.33 = 120,162.06 : x - Step 2: Convert to fraction form
138,319.56/190,479.33 = 120,162.06/x - Step 3: Cross multiply
138,319.56x = 190,479.33 × 120,162.06 - Step 4: Simplify right side
138,319.56x = 22,888,388,680.22 - Step 5: Solve for x
x = 22,888,388,680.22/138,319.56 - Step 6: Final answer
x = 165,474.71
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.