Finding the Fourth Proportional to 130,715.22, 180,386.99 and 74,126.60
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Solution
The fourth proportional to 130,715.22, 180,386.99 and 74,126.60 is: 102,294.69
Step by Step Solution
- Step 1: Write the proportion equation
130,715.22 : 180,386.99 = 74,126.60 : x - Step 2: Convert to fraction form
130,715.22/180,386.99 = 74,126.60/x - Step 3: Cross multiply
130,715.22x = 180,386.99 × 74,126.60 - Step 4: Simplify right side
130,715.22x = 13,371,472,980.37 - Step 5: Solve for x
x = 13,371,472,980.37/130,715.22 - Step 6: Final answer
x = 102,294.69
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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.