Finding the Fourth Proportional to 129,277.33, 178,255.62 and 91,024.65
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Solution
The fourth proportional to 129,277.33, 178,255.62 and 91,024.65 is: 125,510.45
Step by Step Solution
- Step 1: Write the proportion equation
129,277.33 : 178,255.62 = 91,024.65 : x - Step 2: Convert to fraction form
129,277.33/178,255.62 = 91,024.65/x - Step 3: Cross multiply
129,277.33x = 178,255.62 × 91,024.65 - Step 4: Simplify right side
129,277.33x = 16,225,655,421.03 - Step 5: Solve for x
x = 16,225,655,421.03/129,277.33 - Step 6: Final answer
x = 125,510.45
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1.5x scale
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.