Finding the Fourth Proportional to 188,681.42, 260,368.90 and 102,639.78
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Solution
The fourth proportional to 188,681.42, 260,368.90 and 102,639.78 is: 141,636.66
Step by Step Solution
- Step 1: Write the proportion equation
188,681.42 : 260,368.90 = 102,639.78 : x - Step 2: Convert to fraction form
188,681.42/260,368.90 = 102,639.78/x - Step 3: Cross multiply
188,681.42x = 260,368.90 × 102,639.78 - Step 4: Simplify right side
188,681.42x = 26,724,206,358.24 - Step 5: Solve for x
x = 26,724,206,358.24/188,681.42 - Step 6: Final answer
x = 141,636.66
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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.