Finding the Fourth Proportional to 133,991.70, 201,117.15 and 81,503.70
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Solution
The fourth proportional to 133,991.70, 201,117.15 and 81,503.70 is: 122,334.38
Step by Step Solution
- Step 1: Write the proportion equation
133,991.70 : 201,117.15 = 81,503.70 : x - Step 2: Convert to fraction form
133,991.70/201,117.15 = 81,503.70/x - Step 3: Cross multiply
133,991.70x = 201,117.15 × 81,503.70 - Step 4: Simplify right side
133,991.70x = 16,391,791,858.46 - Step 5: Solve for x
x = 16,391,791,858.46/133,991.70 - Step 6: Final answer
x = 122,334.38
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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.