Finding the Fourth Proportional to 153,811.17, 212,259.13 and 85,824.05
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Solution
The fourth proportional to 153,811.17, 212,259.13 and 85,824.05 is: 118,437.02
Step by Step Solution
- Step 1: Write the proportion equation
153,811.17 : 212,259.13 = 85,824.05 : x - Step 2: Convert to fraction form
153,811.17/212,259.13 = 85,824.05/x - Step 3: Cross multiply
153,811.17x = 212,259.13 × 85,824.05 - Step 4: Simplify right side
153,811.17x = 18,216,936,910.22 - Step 5: Solve for x
x = 18,216,936,910.22/153,811.17 - Step 6: Final answer
x = 118,437.02
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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.