Finding the Fourth Proportional to 128,656.14, 192,856.50 and 61,069.74
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Solution
The fourth proportional to 128,656.14, 192,856.50 and 61,069.74 is: 91,543.99
Step by Step Solution
- Step 1: Write the proportion equation
128,656.14 : 192,856.50 = 61,069.74 : x - Step 2: Convert to fraction form
128,656.14/192,856.50 = 61,069.74/x - Step 3: Cross multiply
128,656.14x = 192,856.50 × 61,069.74 - Step 4: Simplify right side
128,656.14x = 11,777,696,312.31 - Step 5: Solve for x
x = 11,777,696,312.31/128,656.14 - Step 6: Final answer
x = 91,543.99
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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.