Finding the Fourth Proportional to 154,811.79, 213,637.49 and 86,828.90
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Solution
The fourth proportional to 154,811.79, 213,637.49 and 86,828.90 is: 119,822.31
Step by Step Solution
- Step 1: Write the proportion equation
154,811.79 : 213,637.49 = 86,828.90 : x - Step 2: Convert to fraction form
154,811.79/213,637.49 = 86,828.90/x - Step 3: Cross multiply
154,811.79x = 213,637.49 × 86,828.90 - Step 4: Simplify right side
154,811.79x = 18,549,906,753.13 - Step 5: Solve for x
x = 18,549,906,753.13/154,811.79 - Step 6: Final answer
x = 119,822.31
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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.