Finding the Fourth Proportional to 149,830.94, 206,772.99 and 86,168.79
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Solution
The fourth proportional to 149,830.94, 206,772.99 and 86,168.79 is: 118,916.55
Step by Step Solution
- Step 1: Write the proportion equation
149,830.94 : 206,772.99 = 86,168.79 : x - Step 2: Convert to fraction form
149,830.94/206,772.99 = 86,168.79/x - Step 3: Cross multiply
149,830.94x = 206,772.99 × 86,168.79 - Step 4: Simplify right side
149,830.94x = 17,817,378,029.85 - Step 5: Solve for x
x = 17,817,378,029.85/149,830.94 - Step 6: Final answer
x = 118,916.55
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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.