Finding the Fourth Proportional to 156,115.13, 215,438.86 and 84,495.14
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Solution
The fourth proportional to 156,115.13, 215,438.86 and 84,495.14 is: 116,603.28
Step by Step Solution
- Step 1: Write the proportion equation
156,115.13 : 215,438.86 = 84,495.14 : x - Step 2: Convert to fraction form
156,115.13/215,438.86 = 84,495.14/x - Step 3: Cross multiply
156,115.13x = 215,438.86 × 84,495.14 - Step 4: Simplify right side
156,115.13x = 18,203,536,637.14 - Step 5: Solve for x
x = 18,203,536,637.14/156,115.13 - Step 6: Final answer
x = 116,603.28
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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.