Finding the Fourth Proportional to 135,998.14, 187,655.98 and 78,616.12
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Solution
The fourth proportional to 135,998.14, 187,655.98 and 78,616.12 is: 108,477.84
Step by Step Solution
- Step 1: Write the proportion equation
135,998.14 : 187,655.98 = 78,616.12 : x - Step 2: Convert to fraction form
135,998.14/187,655.98 = 78,616.12/x - Step 3: Cross multiply
135,998.14x = 187,655.98 × 78,616.12 - Step 4: Simplify right side
135,998.14x = 14,752,785,042.40 - Step 5: Solve for x
x = 14,752,785,042.40/135,998.14 - Step 6: Final answer
x = 108,477.84
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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.