Finding the Fourth Proportional to 135,486.64, 186,973.44 and 78,124.96
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Solution
The fourth proportional to 135,486.64, 186,973.44 and 78,124.96 is: 107,813.53
Step by Step Solution
- Step 1: Write the proportion equation
135,486.64 : 186,973.44 = 78,124.96 : x - Step 2: Convert to fraction form
135,486.64/186,973.44 = 78,124.96/x - Step 3: Cross multiply
135,486.64x = 186,973.44 × 78,124.96 - Step 4: Simplify right side
135,486.64x = 14,607,292,521.06 - Step 5: Solve for x
x = 14,607,292,521.06/135,486.64 - Step 6: Final answer
x = 107,813.53
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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.