Finding the Fourth Proportional to 148,621.13, 205,133.63 and 91,274.12
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Solution
The fourth proportional to 148,621.13, 205,133.63 and 91,274.12 is: 125,980.68
Step by Step Solution
- Step 1: Write the proportion equation
148,621.13 : 205,133.63 = 91,274.12 : x - Step 2: Convert to fraction form
148,621.13/205,133.63 = 91,274.12/x - Step 3: Cross multiply
148,621.13x = 205,133.63 × 91,274.12 - Step 4: Simplify right side
148,621.13x = 18,723,390,078.62 - Step 5: Solve for x
x = 18,723,390,078.62/148,621.13 - Step 6: Final answer
x = 125,980.68
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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.