Finding the Fourth Proportional to 153,181.08, 211,387.86 and 86,113.08
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Solution
The fourth proportional to 153,181.08, 211,387.86 and 86,113.08 is: 118,834.91
Step by Step Solution
- Step 1: Write the proportion equation
153,181.08 : 211,387.86 = 86,113.08 : x - Step 2: Convert to fraction form
153,181.08/211,387.86 = 86,113.08/x - Step 3: Cross multiply
153,181.08x = 211,387.86 × 86,113.08 - Step 4: Simplify right side
153,181.08x = 18,203,259,699.21 - Step 5: Solve for x
x = 18,203,259,699.21/153,181.08 - Step 6: Final answer
x = 118,834.91
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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.