Finding the Fourth Proportional to 107,689.18, 148,585.68 and 90,526.81
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Solution
The fourth proportional to 107,689.18, 148,585.68 and 90,526.81 is: 124,905.66
Step by Step Solution
- Step 1: Write the proportion equation
107,689.18 : 148,585.68 = 90,526.81 : x - Step 2: Convert to fraction form
107,689.18/148,585.68 = 90,526.81/x - Step 3: Cross multiply
107,689.18x = 148,585.68 × 90,526.81 - Step 4: Simplify right side
107,689.18x = 13,450,987,622.08 - Step 5: Solve for x
x = 13,450,987,622.08/107,689.18 - Step 6: Final answer
x = 124,905.66
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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.