Finding the Fourth Proportional to 128,926.08, 193,276.80 and 103,921.92
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Solution
The fourth proportional to 128,926.08, 193,276.80 and 103,921.92 is: 155,792.34
Step by Step Solution
- Step 1: Write the proportion equation
128,926.08 : 193,276.80 = 103,921.92 : x - Step 2: Convert to fraction form
128,926.08/193,276.80 = 103,921.92/x - Step 3: Cross multiply
128,926.08x = 193,276.80 × 103,921.92 - Step 4: Simplify right side
128,926.08x = 20,085,696,147.46 - Step 5: Solve for x
x = 20,085,696,147.46/128,926.08 - Step 6: Final answer
x = 155,792.34
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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.