Finding the Fourth Proportional to 161,811.84, 222,792.18 and 137,565.09
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Solution
The fourth proportional to 161,811.84, 222,792.18 and 137,565.09 is: 189,407.81
Step by Step Solution
- Step 1: Write the proportion equation
161,811.84 : 222,792.18 = 137,565.09 : x - Step 2: Convert to fraction form
161,811.84/222,792.18 = 137,565.09/x - Step 3: Cross multiply
161,811.84x = 222,792.18 × 137,565.09 - Step 4: Simplify right side
161,811.84x = 30,648,426,293.00 - Step 5: Solve for x
x = 30,648,426,293.00/161,811.84 - Step 6: Final answer
x = 189,407.81
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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.