Finding the Fourth Proportional to 210,257.68, 315,484.92 and 91,913.68
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Solution
The fourth proportional to 210,257.68, 315,484.92 and 91,913.68 is: 137,913.54
Step by Step Solution
- Step 1: Write the proportion equation
210,257.68 : 315,484.92 = 91,913.68 : x - Step 2: Convert to fraction form
210,257.68/315,484.92 = 91,913.68/x - Step 3: Cross multiply
210,257.68x = 315,484.92 × 91,913.68 - Step 4: Simplify right side
210,257.68x = 28,997,379,981.71 - Step 5: Solve for x
x = 28,997,379,981.71/210,257.68 - Step 6: Final answer
x = 137,913.54
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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.