Finding the Fourth Proportional to 138,053.68, 190,043.94 and 102,176.08
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Solution
The fourth proportional to 138,053.68, 190,043.94 and 102,176.08 is: 140,655.03
Step by Step Solution
- Step 1: Write the proportion equation
138,053.68 : 190,043.94 = 102,176.08 : x - Step 2: Convert to fraction form
138,053.68/190,043.94 = 102,176.08/x - Step 3: Cross multiply
138,053.68x = 190,043.94 × 102,176.08 - Step 4: Simplify right side
138,053.68x = 19,417,944,816.96 - Step 5: Solve for x
x = 19,417,944,816.96/138,053.68 - Step 6: Final answer
x = 140,655.03
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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.