Finding the Fourth Proportional to 91,140.90, 136,711.35 and 83,923.80
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Solution
The fourth proportional to 91,140.90, 136,711.35 and 83,923.80 is: 125,885.70
Step by Step Solution
- Step 1: Write the proportion equation
91,140.90 : 136,711.35 = 83,923.80 : x - Step 2: Convert to fraction form
91,140.90/136,711.35 = 83,923.80/x - Step 3: Cross multiply
91,140.90x = 136,711.35 × 83,923.80 - Step 4: Simplify right side
91,140.90x = 11,473,335,995.13 - Step 5: Solve for x
x = 11,473,335,995.13/91,140.90 - Step 6: Final answer
x = 125,885.70
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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.