Finding the Fourth Proportional to 112,717.16, 155,547.76 and 62,415.08
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Solution
The fourth proportional to 112,717.16, 155,547.76 and 62,415.08 is: 86,131.75
Step by Step Solution
- Step 1: Write the proportion equation
112,717.16 : 155,547.76 = 62,415.08 : x - Step 2: Convert to fraction form
112,717.16/155,547.76 = 62,415.08/x - Step 3: Cross multiply
112,717.16x = 155,547.76 × 62,415.08 - Step 4: Simplify right side
112,717.16x = 9,708,525,884.22 - Step 5: Solve for x
x = 9,708,525,884.22/112,717.16 - Step 6: Final answer
x = 86,131.75
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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.