Finding the Fourth Proportional to 163,937.60, 246,136.80 and 128,916.80
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Solution
The fourth proportional to 163,937.60, 246,136.80 and 128,916.80 is: 193,556.38
Step by Step Solution
- Step 1: Write the proportion equation
163,937.60 : 246,136.80 = 128,916.80 : x - Step 2: Convert to fraction form
163,937.60/246,136.80 = 128,916.80/x - Step 3: Cross multiply
163,937.60x = 246,136.80 × 128,916.80 - Step 4: Simplify right side
163,937.60x = 31,731,168,618.24 - Step 5: Solve for x
x = 31,731,168,618.24/163,937.60 - Step 6: Final answer
x = 193,556.38
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1.5x scale
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.