Finding the Fourth Proportional to 83,083.44, 124,026.72 and 77,178.60
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Solution
The fourth proportional to 83,083.44, 124,026.72 and 77,178.60 is: 115,211.99
Step by Step Solution
- Step 1: Write the proportion equation
83,083.44 : 124,026.72 = 77,178.60 : x - Step 2: Convert to fraction form
83,083.44/124,026.72 = 77,178.60/x - Step 3: Cross multiply
83,083.44x = 124,026.72 × 77,178.60 - Step 4: Simplify right side
83,083.44x = 9,572,208,612.19 - Step 5: Solve for x
x = 9,572,208,612.19/83,083.44 - Step 6: Final answer
x = 115,211.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.