Finding the Fourth Proportional to 110,943.51, 153,228.29 and 74,581.80
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Solution
The fourth proportional to 110,943.51, 153,228.29 and 74,581.80 is: 103,007.75
Step by Step Solution
- Step 1: Write the proportion equation
110,943.51 : 153,228.29 = 74,581.80 : x - Step 2: Convert to fraction form
110,943.51/153,228.29 = 74,581.80/x - Step 3: Cross multiply
110,943.51x = 153,228.29 × 74,581.80 - Step 4: Simplify right side
110,943.51x = 11,428,041,306.21 - Step 5: Solve for x
x = 11,428,041,306.21/110,943.51 - Step 6: Final answer
x = 103,007.75
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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.