Finding the Fourth Proportional to 145,917.99, 201,366.95 and 78,849.99
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Solution
The fourth proportional to 145,917.99, 201,366.95 and 78,849.99 is: 108,813.05
Step by Step Solution
- Step 1: Write the proportion equation
145,917.99 : 201,366.95 = 78,849.99 : x - Step 2: Convert to fraction form
145,917.99/201,366.95 = 78,849.99/x - Step 3: Cross multiply
145,917.99x = 201,366.95 × 78,849.99 - Step 4: Simplify right side
145,917.99x = 15,877,781,599.58 - Step 5: Solve for x
x = 15,877,781,599.58/145,917.99 - Step 6: Final answer
x = 108,813.05
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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.