Finding the Fourth Proportional to 143,030.61, 197,381.61 and 79,368.26
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Solution
The fourth proportional to 143,030.61, 197,381.61 and 79,368.26 is: 109,527.84
Step by Step Solution
- Step 1: Write the proportion equation
143,030.61 : 197,381.61 = 79,368.26 : x - Step 2: Convert to fraction form
143,030.61/197,381.61 = 79,368.26/x - Step 3: Cross multiply
143,030.61x = 197,381.61 × 79,368.26 - Step 4: Simplify right side
143,030.61x = 15,665,833,954.79 - Step 5: Solve for x
x = 15,665,833,954.79/143,030.61 - Step 6: Final answer
x = 109,527.84
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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.