Finding the Fourth Proportional to 135,792.16, 187,415.70 and 79,203.54
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Solution
The fourth proportional to 135,792.16, 187,415.70 and 79,203.54 is: 109,314.02
Step by Step Solution
- Step 1: Write the proportion equation
135,792.16 : 187,415.70 = 79,203.54 : x - Step 2: Convert to fraction form
135,792.16/187,415.70 = 79,203.54/x - Step 3: Cross multiply
135,792.16x = 187,415.70 × 79,203.54 - Step 4: Simplify right side
135,792.16x = 14,843,986,891.58 - Step 5: Solve for x
x = 14,843,986,891.58/135,792.16 - Step 6: Final answer
x = 109,314.02
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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.