Finding the Fourth Proportional to 156,312.79, 215,711.35 and 84,694.75
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Solution
The fourth proportional to 156,312.79, 215,711.35 and 84,694.75 is: 116,878.59
Step by Step Solution
- Step 1: Write the proportion equation
156,312.79 : 215,711.35 = 84,694.75 : x - Step 2: Convert to fraction form
156,312.79/215,711.35 = 84,694.75/x - Step 3: Cross multiply
156,312.79x = 215,711.35 × 84,694.75 - Step 4: Simplify right side
156,312.79x = 18,269,618,860.41 - Step 5: Solve for x
x = 18,269,618,860.41/156,312.79 - Step 6: Final answer
x = 116,878.59
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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.