Finding the Fourth Proportional to 121,315.16, 181,970.58 and 51,195.08
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Solution
The fourth proportional to 121,315.16, 181,970.58 and 51,195.08 is: 76,791.71
Step by Step Solution
- Step 1: Write the proportion equation
121,315.16 : 181,970.58 = 51,195.08 : x - Step 2: Convert to fraction form
121,315.16/181,970.58 = 51,195.08/x - Step 3: Cross multiply
121,315.16x = 181,970.58 × 51,195.08 - Step 4: Simplify right side
121,315.16x = 9,315,998,400.75 - Step 5: Solve for x
x = 9,315,998,400.75/121,315.16 - Step 6: Final answer
x = 76,791.71
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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.