Finding the Fourth Proportional to 130,914.68, 180,661.10 and 79,916.68
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Solution
The fourth proportional to 130,914.68, 180,661.10 and 79,916.68 is: 110,284.31
Step by Step Solution
- Step 1: Write the proportion equation
130,914.68 : 180,661.10 = 79,916.68 : x - Step 2: Convert to fraction form
130,914.68/180,661.10 = 79,916.68/x - Step 3: Cross multiply
130,914.68x = 180,661.10 × 79,916.68 - Step 4: Simplify right side
130,914.68x = 14,437,835,317.15 - Step 5: Solve for x
x = 14,437,835,317.15/130,914.68 - Step 6: Final answer
x = 110,284.31
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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.