Finding the Fourth Proportional to 112,617.68, 155,405.96 and 62,313.68
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Solution
The fourth proportional to 112,617.68, 155,405.96 and 62,313.68 is: 85,989.32
Step by Step Solution
- Step 1: Write the proportion equation
112,617.68 : 155,405.96 = 62,313.68 : x - Step 2: Convert to fraction form
112,617.68/155,405.96 = 62,313.68/x - Step 3: Cross multiply
112,617.68x = 155,405.96 × 62,313.68 - Step 4: Simplify right side
112,617.68x = 9,683,917,261.53 - Step 5: Solve for x
x = 9,683,917,261.53/112,617.68 - Step 6: Final answer
x = 85,989.32
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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.