Finding the Fourth Proportional to 124,685.09, 172,077.80 and 74,384.09
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Solution
The fourth proportional to 124,685.09, 172,077.80 and 74,384.09 is: 102,657.43
Step by Step Solution
- Step 1: Write the proportion equation
124,685.09 : 172,077.80 = 74,384.09 : x - Step 2: Convert to fraction form
124,685.09/172,077.80 = 74,384.09/x - Step 3: Cross multiply
124,685.09x = 172,077.80 × 74,384.09 - Step 4: Simplify right side
124,685.09x = 12,799,849,887.77 - Step 5: Solve for x
x = 12,799,849,887.77/124,685.09 - Step 6: Final answer
x = 102,657.43
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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.