Finding the Fourth Proportional to 135,616.14, 187,154.96 and 81,890.46
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Solution
The fourth proportional to 135,616.14, 187,154.96 and 81,890.46 is: 113,011.66
Step by Step Solution
- Step 1: Write the proportion equation
135,616.14 : 187,154.96 = 81,890.46 : x - Step 2: Convert to fraction form
135,616.14/187,154.96 = 81,890.46/x - Step 3: Cross multiply
135,616.14x = 187,154.96 × 81,890.46 - Step 4: Simplify right side
135,616.14x = 15,326,205,356.23 - Step 5: Solve for x
x = 15,326,205,356.23/135,616.14 - Step 6: Final answer
x = 113,011.66
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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.