Finding the Fourth Proportional to 136,041.63, 187,828.91 and 121,656.70
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Solution
The fourth proportional to 136,041.63, 187,828.91 and 121,656.70 is: 167,968.04
Step by Step Solution
- Step 1: Write the proportion equation
136,041.63 : 187,828.91 = 121,656.70 : x - Step 2: Convert to fraction form
136,041.63/187,828.91 = 121,656.70/x - Step 3: Cross multiply
136,041.63x = 187,828.91 × 121,656.70 - Step 4: Simplify right side
136,041.63x = 22,850,645,355.20 - Step 5: Solve for x
x = 22,850,645,355.20/136,041.63 - Step 6: Final answer
x = 167,968.04
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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.