Finding the Fourth Proportional to 128,569.17, 192,926.66 and 69,403.53
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Solution
The fourth proportional to 128,569.17, 192,926.66 and 69,403.53 is: 104,144.65
Step by Step Solution
- Step 1: Write the proportion equation
128,569.17 : 192,926.66 = 69,403.53 : x - Step 2: Convert to fraction form
128,569.17/192,926.66 = 69,403.53/x - Step 3: Cross multiply
128,569.17x = 192,926.66 × 69,403.53 - Step 4: Simplify right side
128,569.17x = 13,389,792,001.96 - Step 5: Solve for x
x = 13,389,792,001.96/128,569.17 - Step 6: Final answer
x = 104,144.65
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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.