Finding the Fourth Proportional to 153,387.40, 230,119.26 and 121,916.20
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Solution
The fourth proportional to 153,387.40, 230,119.26 and 121,916.20 is: 182,904.63
Step by Step Solution
- Step 1: Write the proportion equation
153,387.40 : 230,119.26 = 121,916.20 : x - Step 2: Convert to fraction form
153,387.40/230,119.26 = 121,916.20/x - Step 3: Cross multiply
153,387.40x = 230,119.26 × 121,916.20 - Step 4: Simplify right side
153,387.40x = 28,055,265,726.01 - Step 5: Solve for x
x = 28,055,265,726.01/153,387.40 - Step 6: Final answer
x = 182,904.63
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.