Finding the Fourth Proportional to 142,557.92, 196,681.84 and 82,126.99
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Solution
The fourth proportional to 142,557.92, 196,681.84 and 82,126.99 is: 113,307.54
Step by Step Solution
- Step 1: Write the proportion equation
142,557.92 : 196,681.84 = 82,126.99 : x - Step 2: Convert to fraction form
142,557.92/196,681.84 = 82,126.99/x - Step 3: Cross multiply
142,557.92x = 196,681.84 × 82,126.99 - Step 4: Simplify right side
142,557.92x = 16,152,887,547.40 - Step 5: Solve for x
x = 16,152,887,547.40/142,557.92 - Step 6: Final answer
x = 113,307.54
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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.