Finding the Fourth Proportional to 129,024.36, 178,053.84 and 72,436.14
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Solution
The fourth proportional to 129,024.36, 178,053.84 and 72,436.14 is: 99,962.00
Step by Step Solution
- Step 1: Write the proportion equation
129,024.36 : 178,053.84 = 72,436.14 : x - Step 2: Convert to fraction form
129,024.36/178,053.84 = 72,436.14/x - Step 3: Cross multiply
129,024.36x = 178,053.84 × 72,436.14 - Step 4: Simplify right side
129,024.36x = 12,897,532,881.78 - Step 5: Solve for x
x = 12,897,532,881.78/129,024.36 - Step 6: Final answer
x = 99,962.00
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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.