Finding the Fourth Proportional to 126,653.79, 174,740.01 and 74,973.63
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Solution
The fourth proportional to 126,653.79, 174,740.01 and 74,973.63 is: 103,438.62
Step by Step Solution
- Step 1: Write the proportion equation
126,653.79 : 174,740.01 = 74,973.63 : x - Step 2: Convert to fraction form
126,653.79/174,740.01 = 74,973.63/x - Step 3: Cross multiply
126,653.79x = 174,740.01 × 74,973.63 - Step 4: Simplify right side
126,653.79x = 13,100,892,855.94 - Step 5: Solve for x
x = 13,100,892,855.94/126,653.79 - Step 6: Final answer
x = 103,438.62
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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.