Finding the Fourth Proportional to 112,920.11, 155,438.64 and 97,599.68
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Solution
The fourth proportional to 112,920.11, 155,438.64 and 97,599.68 is: 134,349.51
Step by Step Solution
- Step 1: Write the proportion equation
112,920.11 : 155,438.64 = 97,599.68 : x - Step 2: Convert to fraction form
112,920.11/155,438.64 = 97,599.68/x - Step 3: Cross multiply
112,920.11x = 155,438.64 × 97,599.68 - Step 4: Simplify right side
112,920.11x = 15,170,760,746.44 - Step 5: Solve for x
x = 15,170,760,746.44/112,920.11 - Step 6: Final answer
x = 134,349.51
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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.