Finding the Fourth Proportional to 156,106.68, 215,426.84 and 84,486.75
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Solution
The fourth proportional to 156,106.68, 215,426.84 and 84,486.75 is: 116,591.51
Step by Step Solution
- Step 1: Write the proportion equation
156,106.68 : 215,426.84 = 84,486.75 : x - Step 2: Convert to fraction form
156,106.68/215,426.84 = 84,486.75/x - Step 3: Cross multiply
156,106.68x = 215,426.84 × 84,486.75 - Step 4: Simplify right side
156,106.68x = 18,200,712,819.32 - Step 5: Solve for x
x = 18,200,712,819.32/156,106.68 - Step 6: Final answer
x = 116,591.51
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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.