Finding the Fourth Proportional to 128,972.80, 193,324.80 and 62,312.32
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Solution
The fourth proportional to 128,972.80, 193,324.80 and 62,312.32 is: 93,403.55
Step by Step Solution
- Step 1: Write the proportion equation
128,972.80 : 193,324.80 = 62,312.32 : x - Step 2: Convert to fraction form
128,972.80/193,324.80 = 62,312.32/x - Step 3: Cross multiply
128,972.80x = 193,324.80 × 62,312.32 - Step 4: Simplify right side
128,972.80x = 12,046,516,801.54 - Step 5: Solve for x
x = 12,046,516,801.54/128,972.80 - Step 6: Final answer
x = 93,403.55
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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.