Finding the Fourth Proportional to 99,661.08, 137,533.36 and 54,338.68
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Solution
The fourth proportional to 99,661.08, 137,533.36 and 54,338.68 is: 74,987.96
Step by Step Solution
- Step 1: Write the proportion equation
99,661.08 : 137,533.36 = 54,338.68 : x - Step 2: Convert to fraction form
99,661.08/137,533.36 = 54,338.68/x - Step 3: Cross multiply
99,661.08x = 137,533.36 × 54,338.68 - Step 4: Simplify right side
99,661.08x = 7,473,381,238.36 - Step 5: Solve for x
x = 7,473,381,238.36/99,661.08 - Step 6: Final answer
x = 74,987.96
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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.