Finding the Fourth Proportional to 128,894.08, 193,417.67 and 69,728.44
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Solution
The fourth proportional to 128,894.08, 193,417.67 and 69,728.44 is: 104,634.07
Step by Step Solution
- Step 1: Write the proportion equation
128,894.08 : 193,417.67 = 69,728.44 : x - Step 2: Convert to fraction form
128,894.08/193,417.67 = 69,728.44/x - Step 3: Cross multiply
128,894.08x = 193,417.67 × 69,728.44 - Step 4: Simplify right side
128,894.08x = 13,486,712,397.53 - Step 5: Solve for x
x = 13,486,712,397.53/128,894.08 - Step 6: Final answer
x = 104,634.07
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.