Finding the Fourth Proportional to 156,069.36, 215,374.10 and 84,447.80
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Solution
The fourth proportional to 156,069.36, 215,374.10 and 84,447.80 is: 116,537.09
Step by Step Solution
- Step 1: Write the proportion equation
156,069.36 : 215,374.10 = 84,447.80 : x - Step 2: Convert to fraction form
156,069.36/215,374.10 = 84,447.80/x - Step 3: Cross multiply
156,069.36x = 215,374.10 × 84,447.80 - Step 4: Simplify right side
156,069.36x = 18,187,868,921.98 - Step 5: Solve for x
x = 18,187,868,921.98/156,069.36 - Step 6: Final answer
x = 116,537.09
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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.