Finding the Fourth Proportional to 157,890.08, 217,903.44 and 86,280.96
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Solution
The fourth proportional to 157,890.08, 217,903.44 and 86,280.96 is: 119,075.99
Step by Step Solution
- Step 1: Write the proportion equation
157,890.08 : 217,903.44 = 86,280.96 : x - Step 2: Convert to fraction form
157,890.08/217,903.44 = 86,280.96/x - Step 3: Cross multiply
157,890.08x = 217,903.44 × 86,280.96 - Step 4: Simplify right side
157,890.08x = 18,800,917,990.50 - Step 5: Solve for x
x = 18,800,917,990.50/157,890.08 - Step 6: Final answer
x = 119,075.99
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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.