Finding the Fourth Proportional to 143,848.05, 198,512.93 and 80,178.99
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Solution
The fourth proportional to 143,848.05, 198,512.93 and 80,178.99 is: 110,648.46
Step by Step Solution
- Step 1: Write the proportion equation
143,848.05 : 198,512.93 = 80,178.99 : x - Step 2: Convert to fraction form
143,848.05/198,512.93 = 80,178.99/x - Step 3: Cross multiply
143,848.05x = 198,512.93 × 80,178.99 - Step 4: Simplify right side
143,848.05x = 15,916,565,828.45 - Step 5: Solve for x
x = 15,916,565,828.45/143,848.05 - Step 6: Final answer
x = 110,648.46
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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.