Finding the Fourth Proportional to 121,277.70, 181,916.55 and 42,383.70
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Solution
The fourth proportional to 121,277.70, 181,916.55 and 42,383.70 is: 63,575.55
Step by Step Solution
- Step 1: Write the proportion equation
121,277.70 : 181,916.55 = 42,383.70 : x - Step 2: Convert to fraction form
121,277.70/181,916.55 = 42,383.70/x - Step 3: Cross multiply
121,277.70x = 181,916.55 × 42,383.70 - Step 4: Simplify right side
121,277.70x = 7,710,296,480.24 - Step 5: Solve for x
x = 7,710,296,480.24/121,277.70 - Step 6: Final answer
x = 63,575.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.