Finding the Fourth Proportional to 138,585.97, 191,248.59 and 74,923.75
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Solution
The fourth proportional to 138,585.97, 191,248.59 and 74,923.75 is: 103,394.75
Step by Step Solution
- Step 1: Write the proportion equation
138,585.97 : 191,248.59 = 74,923.75 : x - Step 2: Convert to fraction form
138,585.97/191,248.59 = 74,923.75/x - Step 3: Cross multiply
138,585.97x = 191,248.59 × 74,923.75 - Step 4: Simplify right side
138,585.97x = 14,329,061,545.01 - Step 5: Solve for x
x = 14,329,061,545.01/138,585.97 - Step 6: Final answer
x = 103,394.75
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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.