Finding the Fourth Proportional to 101,175.80, 139,621.84 and 55,853.80
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Solution
The fourth proportional to 101,175.80, 139,621.84 and 55,853.80 is: 77,077.82
Step by Step Solution
- Step 1: Write the proportion equation
101,175.80 : 139,621.84 = 55,853.80 : x - Step 2: Convert to fraction form
101,175.80/139,621.84 = 55,853.80/x - Step 3: Cross multiply
101,175.80x = 139,621.84 × 55,853.80 - Step 4: Simplify right side
101,175.80x = 7,798,410,326.99 - Step 5: Solve for x
x = 7,798,410,326.99/101,175.80 - Step 6: Final answer
x = 77,077.82
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1.5x scale
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.