Finding the Fourth Proportional to 153,934.56, 212,427.64 and 85,952.68
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Solution
The fourth proportional to 153,934.56, 212,427.64 and 85,952.68 is: 118,613.55
Step by Step Solution
- Step 1: Write the proportion equation
153,934.56 : 212,427.64 = 85,952.68 : x - Step 2: Convert to fraction form
153,934.56/212,427.64 = 85,952.68/x - Step 3: Cross multiply
153,934.56x = 212,427.64 × 85,952.68 - Step 4: Simplify right side
153,934.56x = 18,258,724,964.08 - Step 5: Solve for x
x = 18,258,724,964.08/153,934.56 - Step 6: Final answer
x = 118,613.55
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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.