Finding the Fourth Proportional to 98,972.70, 138,911.70 and 98,972.70
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Solution
The fourth proportional to 98,972.70, 138,911.70 and 98,972.70 is: 138,911.70
Step by Step Solution
- Step 1: Write the proportion equation
98,972.70 : 138,911.70 = 98,972.70 : x - Step 2: Convert to fraction form
98,972.70/138,911.70 = 98,972.70/x - Step 3: Cross multiply
98,972.70x = 138,911.70 × 98,972.70 - Step 4: Simplify right side
98,972.70x = 13,748,466,010.59 - Step 5: Solve for x
x = 13,748,466,010.59/98,972.70 - Step 6: Final answer
x = 138,911.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.