Finding the Fourth Proportional to 145,984.19, 201,457.64 and 78,916.19
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Solution
The fourth proportional to 145,984.19, 201,457.64 and 78,916.19 is: 108,904.05
Step by Step Solution
- Step 1: Write the proportion equation
145,984.19 : 201,457.64 = 78,916.19 : x - Step 2: Convert to fraction form
145,984.19/201,457.64 = 78,916.19/x - Step 3: Cross multiply
145,984.19x = 201,457.64 × 78,916.19 - Step 4: Simplify right side
145,984.19x = 15,898,269,000.61 - Step 5: Solve for x
x = 15,898,269,000.61/145,984.19 - Step 6: Final answer
x = 108,904.05
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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.