Finding the Fourth Proportional to 155,709.49, 214,879.08 and 84,089.52
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Solution
The fourth proportional to 155,709.49, 214,879.08 and 84,089.52 is: 116,043.53
Step by Step Solution
- Step 1: Write the proportion equation
155,709.49 : 214,879.08 = 84,089.52 : x - Step 2: Convert to fraction form
155,709.49/214,879.08 = 84,089.52/x - Step 3: Cross multiply
155,709.49x = 214,879.08 × 84,089.52 - Step 4: Simplify right side
155,709.49x = 18,069,078,695.24 - Step 5: Solve for x
x = 18,069,078,695.24/155,709.49 - Step 6: Final answer
x = 116,043.53
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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.