Finding the Fourth Proportional to 101,985.08, 140,625.95 and 69,724.95
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Solution
The fourth proportional to 101,985.08, 140,625.95 and 69,724.95 is: 96,142.86
Step by Step Solution
- Step 1: Write the proportion equation
101,985.08 : 140,625.95 = 69,724.95 : x - Step 2: Convert to fraction form
101,985.08/140,625.95 = 69,724.95/x - Step 3: Cross multiply
101,985.08x = 140,625.95 × 69,724.95 - Step 4: Simplify right side
101,985.08x = 9,805,136,983.83 - Step 5: Solve for x
x = 9,805,136,983.83/101,985.08 - Step 6: Final answer
x = 96,142.86
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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.