Finding the Third Proportional to 129,120.75 and 279,681.75
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Solution
The third proportional to 129,120.75 and 279,681.75 is: 605,804.11
Step by Step Solution
- Step 1: Write the proportion equation
129,120.75 : 279,681.75 = 279,681.75 : x - Step 2: Convert to fraction form
129,120.75/279,681.75 = 279,681.75/x - Step 3: Cross multiply
129,120.75x = 279,681.75 × 279,681.75 - Step 4: Simplify right side
129,120.75x = 78,221,881,283.06 - Step 5: Solve for x
x = 78,221,881,283.06/129,120.75 - Step 6: Final answer
x = 605,804.11
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These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.