Finding the Fourth Proportional to 129,663.80, 178,762.74 and 97,260.68
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Solution
The fourth proportional to 129,663.80, 178,762.74 and 97,260.68 is: 134,089.74
Step by Step Solution
- Step 1: Write the proportion equation
129,663.80 : 178,762.74 = 97,260.68 : x - Step 2: Convert to fraction form
129,663.80/178,762.74 = 97,260.68/x - Step 3: Cross multiply
129,663.80x = 178,762.74 × 97,260.68 - Step 4: Simplify right side
129,663.80x = 17,386,585,651.06 - Step 5: Solve for x
x = 17,386,585,651.06/129,663.80 - Step 6: Final answer
x = 134,089.74
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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.