Finding the Fourth Proportional to 153,926.16, 212,416.08 and 85,944.29
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Solution
The fourth proportional to 153,926.16, 212,416.08 and 85,944.29 is: 118,601.99
Step by Step Solution
- Step 1: Write the proportion equation
153,926.16 : 212,416.08 = 85,944.29 : x - Step 2: Convert to fraction form
153,926.16/212,416.08 = 85,944.29/x - Step 3: Cross multiply
153,926.16x = 212,416.08 × 85,944.29 - Step 4: Simplify right side
153,926.16x = 18,255,948,914.66 - Step 5: Solve for x
x = 18,255,948,914.66/153,926.16 - Step 6: Final answer
x = 118,601.99
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1.5x scale
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.