Finding the Fourth Proportional to 133,490.26, 184,283.21 and 76,890.70
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Solution
The fourth proportional to 133,490.26, 184,283.21 and 76,890.70 is: 106,147.55
Step by Step Solution
- Step 1: Write the proportion equation
133,490.26 : 184,283.21 = 76,890.70 : x - Step 2: Convert to fraction form
133,490.26/184,283.21 = 76,890.70/x - Step 3: Cross multiply
133,490.26x = 184,283.21 × 76,890.70 - Step 4: Simplify right side
133,490.26x = 14,169,663,709.28 - Step 5: Solve for x
x = 14,169,663,709.28/133,490.26 - Step 6: Final answer
x = 106,147.55
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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.