Finding the Fourth Proportional to 115,130.87, 158,838.45 and 69,776.13
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Solution
The fourth proportional to 115,130.87, 158,838.45 and 69,776.13 is: 96,265.52
Step by Step Solution
- Step 1: Write the proportion equation
115,130.87 : 158,838.45 = 69,776.13 : x - Step 2: Convert to fraction form
115,130.87/158,838.45 = 69,776.13/x - Step 3: Cross multiply
115,130.87x = 158,838.45 × 69,776.13 - Step 4: Simplify right side
115,130.87x = 11,083,132,336.20 - Step 5: Solve for x
x = 11,083,132,336.20/115,130.87 - Step 6: Final answer
x = 96,265.52
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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.