Finding the Fourth Proportional to 98,396.70, 147,595.05 and 78,713.70
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Solution
The fourth proportional to 98,396.70, 147,595.05 and 78,713.70 is: 118,070.55
Step by Step Solution
- Step 1: Write the proportion equation
98,396.70 : 147,595.05 = 78,713.70 : x - Step 2: Convert to fraction form
98,396.70/147,595.05 = 78,713.70/x - Step 3: Cross multiply
98,396.70x = 147,595.05 × 78,713.70 - Step 4: Simplify right side
98,396.70x = 11,617,752,487.19 - Step 5: Solve for x
x = 11,617,752,487.19/98,396.70 - Step 6: Final answer
x = 118,070.55
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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.