Finding the Fourth Proportional to 137,830.74, 190,213.65 and 77,398.26
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Solution
The fourth proportional to 137,830.74, 190,213.65 and 77,398.26 is: 106,813.66
Step by Step Solution
- Step 1: Write the proportion equation
137,830.74 : 190,213.65 = 77,398.26 : x - Step 2: Convert to fraction form
137,830.74/190,213.65 = 77,398.26/x - Step 3: Cross multiply
137,830.74x = 190,213.65 × 77,398.26 - Step 4: Simplify right side
137,830.74x = 14,722,205,538.25 - Step 5: Solve for x
x = 14,722,205,538.25/137,830.74 - Step 6: Final answer
x = 106,813.66
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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.