Finding the Fourth Proportional to 115,376.08, 159,219.12 and 65,075.08
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Solution
The fourth proportional to 115,376.08, 159,219.12 and 65,075.08 is: 89,803.68
Step by Step Solution
- Step 1: Write the proportion equation
115,376.08 : 159,219.12 = 65,075.08 : x - Step 2: Convert to fraction form
115,376.08/159,219.12 = 65,075.08/x - Step 3: Cross multiply
115,376.08x = 159,219.12 × 65,075.08 - Step 4: Simplify right side
115,376.08x = 10,361,196,971.53 - Step 5: Solve for x
x = 10,361,196,971.53/115,376.08 - Step 6: Final answer
x = 89,803.68
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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.