Finding the Fourth Proportional to 120,990.42, 181,351.08 and 91,312.02
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Solution
The fourth proportional to 120,990.42, 181,351.08 and 91,312.02 is: 136,866.48
Step by Step Solution
- Step 1: Write the proportion equation
120,990.42 : 181,351.08 = 91,312.02 : x - Step 2: Convert to fraction form
120,990.42/181,351.08 = 91,312.02/x - Step 3: Cross multiply
120,990.42x = 181,351.08 × 91,312.02 - Step 4: Simplify right side
120,990.42x = 16,559,533,443.98 - Step 5: Solve for x
x = 16,559,533,443.98/120,990.42 - Step 6: Final answer
x = 136,866.48
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.