Finding the Fourth Proportional to 103,708.18, 142,816.11 and 90,089.99
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Solution
The fourth proportional to 103,708.18, 142,816.11 and 90,089.99 is: 124,062.56
Step by Step Solution
- Step 1: Write the proportion equation
103,708.18 : 142,816.11 = 90,089.99 : x - Step 2: Convert to fraction form
103,708.18/142,816.11 = 90,089.99/x - Step 3: Cross multiply
103,708.18x = 142,816.11 × 90,089.99 - Step 4: Simplify right side
103,708.18x = 12,866,301,921.74 - Step 5: Solve for x
x = 12,866,301,921.74/103,708.18 - Step 6: Final answer
x = 124,062.56
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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.