Finding the Fourth Proportional to 101,987.08, 140,628.70 and 69,726.96
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Solution
The fourth proportional to 101,987.08, 140,628.70 and 69,726.96 is: 96,145.63
Step by Step Solution
- Step 1: Write the proportion equation
101,987.08 : 140,628.70 = 69,726.96 : x - Step 2: Convert to fraction form
101,987.08/140,628.70 = 69,726.96/x - Step 3: Cross multiply
101,987.08x = 140,628.70 × 69,726.96 - Step 4: Simplify right side
101,987.08x = 9,805,611,739.75 - Step 5: Solve for x
x = 9,805,611,739.75/101,987.08 - Step 6: Final answer
x = 96,145.63
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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.