Finding the Fourth Proportional to 124,985.18, 172,479.84 and 68,400.20
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Solution
The fourth proportional to 124,985.18, 172,479.84 and 68,400.20 is: 94,392.44
Step by Step Solution
- Step 1: Write the proportion equation
124,985.18 : 172,479.84 = 68,400.20 : x - Step 2: Convert to fraction form
124,985.18/172,479.84 = 68,400.20/x - Step 3: Cross multiply
124,985.18x = 172,479.84 × 68,400.20 - Step 4: Simplify right side
124,985.18x = 11,797,655,551.97 - Step 5: Solve for x
x = 11,797,655,551.97/124,985.18 - Step 6: Final answer
x = 94,392.44
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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.