Finding the Fourth Proportional to 130,971.26, 180,762.08 and 77,269.47
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Solution
The fourth proportional to 130,971.26, 180,762.08 and 77,269.47 is: 106,644.70
Step by Step Solution
- Step 1: Write the proportion equation
130,971.26 : 180,762.08 = 77,269.47 : x - Step 2: Convert to fraction form
130,971.26/180,762.08 = 77,269.47/x - Step 3: Cross multiply
130,971.26x = 180,762.08 × 77,269.47 - Step 4: Simplify right side
130,971.26x = 13,967,390,117.70 - Step 5: Solve for x
x = 13,967,390,117.70/130,971.26 - Step 6: Final answer
x = 106,644.70
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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.