Finding the Fourth Proportional to 97,937.40, 135,151.20 and 57,108.96
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Solution
The fourth proportional to 97,937.40, 135,151.20 and 57,108.96 is: 78,808.96
Step by Step Solution
- Step 1: Write the proportion equation
97,937.40 : 135,151.20 = 57,108.96 : x - Step 2: Convert to fraction form
97,937.40/135,151.20 = 57,108.96/x - Step 3: Cross multiply
97,937.40x = 135,151.20 × 57,108.96 - Step 4: Simplify right side
97,937.40x = 7,718,344,474.75 - Step 5: Solve for x
x = 7,718,344,474.75/97,937.40 - Step 6: Final answer
x = 78,808.96
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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.