Finding the Fourth Proportional to 130,708.18, 180,349.68 and 85,452.40
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Solution
The fourth proportional to 130,708.18, 180,349.68 and 85,452.40 is: 117,906.26
Step by Step Solution
- Step 1: Write the proportion equation
130,708.18 : 180,349.68 = 85,452.40 : x - Step 2: Convert to fraction form
130,708.18/180,349.68 = 85,452.40/x - Step 3: Cross multiply
130,708.18x = 180,349.68 × 85,452.40 - Step 4: Simplify right side
130,708.18x = 15,411,312,995.23 - Step 5: Solve for x
x = 15,411,312,995.23/130,708.18 - Step 6: Final answer
x = 117,906.26
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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.