Finding the Fourth Proportional to 155,655.84, 214,790.49 and 91,981.47
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Solution
The fourth proportional to 155,655.84, 214,790.49 and 91,981.47 is: 126,925.82
Step by Step Solution
- Step 1: Write the proportion equation
155,655.84 : 214,790.49 = 91,981.47 : x - Step 2: Convert to fraction form
155,655.84/214,790.49 = 91,981.47/x - Step 3: Cross multiply
155,655.84x = 214,790.49 × 91,981.47 - Step 4: Simplify right side
155,655.84x = 19,756,745,012.22 - Step 5: Solve for x
x = 19,756,745,012.22/155,655.84 - Step 6: Final answer
x = 126,925.82
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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.