Finding the Fourth Proportional to 135,774.68, 187,377.94 and 78,416.44
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Solution
The fourth proportional to 135,774.68, 187,377.94 and 78,416.44 is: 108,219.82
Step by Step Solution
- Step 1: Write the proportion equation
135,774.68 : 187,377.94 = 78,416.44 : x - Step 2: Convert to fraction form
135,774.68/187,377.94 = 78,416.44/x - Step 3: Cross multiply
135,774.68x = 187,377.94 × 78,416.44 - Step 4: Simplify right side
135,774.68x = 14,693,510,989.33 - Step 5: Solve for x
x = 14,693,510,989.33/135,774.68 - Step 6: Final answer
x = 108,219.82
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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.