Finding the Fourth Proportional to 135,923.75, 187,574.78 and 76,307.75
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Solution
The fourth proportional to 135,923.75, 187,574.78 and 76,307.75 is: 105,304.70
Step by Step Solution
- Step 1: Write the proportion equation
135,923.75 : 187,574.78 = 76,307.75 : x - Step 2: Convert to fraction form
135,923.75/187,574.78 = 76,307.75/x - Step 3: Cross multiply
135,923.75x = 187,574.78 × 76,307.75 - Step 4: Simplify right side
135,923.75x = 14,313,409,418.55 - Step 5: Solve for x
x = 14,313,409,418.55/135,923.75 - Step 6: Final answer
x = 105,304.70
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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.