Finding the Fourth Proportional to 124,482.92, 171,730.86 and 76,718.84
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Solution
The fourth proportional to 124,482.92, 171,730.86 and 76,718.84 is: 105,837.75
Step by Step Solution
- Step 1: Write the proportion equation
124,482.92 : 171,730.86 = 76,718.84 : x - Step 2: Convert to fraction form
124,482.92/171,730.86 = 76,718.84/x - Step 3: Cross multiply
124,482.92x = 171,730.86 × 76,718.84 - Step 4: Simplify right side
124,482.92x = 13,174,992,371.40 - Step 5: Solve for x
x = 13,174,992,371.40/124,482.92 - Step 6: Final answer
x = 105,837.75
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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.