Finding the Fourth Proportional to 153,784.05, 212,228.16 and 85,806.96
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Solution
The fourth proportional to 153,784.05, 212,228.16 and 85,806.96 is: 118,417.05
Step by Step Solution
- Step 1: Write the proportion equation
153,784.05 : 212,228.16 = 85,806.96 : x - Step 2: Convert to fraction form
153,784.05/212,228.16 = 85,806.96/x - Step 3: Cross multiply
153,784.05x = 212,228.16 × 85,806.96 - Step 4: Simplify right side
153,784.05x = 18,210,653,235.99 - Step 5: Solve for x
x = 18,210,653,235.99/153,784.05 - Step 6: Final answer
x = 118,417.05
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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.