Finding the Fourth Proportional to 138,595.08, 191,261.49 and 74,932.88
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Solution
The fourth proportional to 138,595.08, 191,261.49 and 74,932.88 is: 103,407.53
Step by Step Solution
- Step 1: Write the proportion equation
138,595.08 : 191,261.49 = 74,932.88 : x - Step 2: Convert to fraction form
138,595.08/191,261.49 = 74,932.88/x - Step 3: Cross multiply
138,595.08x = 191,261.49 × 74,932.88 - Step 4: Simplify right side
138,595.08x = 14,331,774,278.79 - Step 5: Solve for x
x = 14,331,774,278.79/138,595.08 - Step 6: Final answer
x = 103,407.53
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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.