Finding the Fourth Proportional to 99,813.80, 149,720.70 and 47,325.80
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Solution
The fourth proportional to 99,813.80, 149,720.70 and 47,325.80 is: 70,988.70
Step by Step Solution
- Step 1: Write the proportion equation
99,813.80 : 149,720.70 = 47,325.80 : x - Step 2: Convert to fraction form
99,813.80/149,720.70 = 47,325.80/x - Step 3: Cross multiply
99,813.80x = 149,720.70 × 47,325.80 - Step 4: Simplify right side
99,813.80x = 7,085,651,904.06 - Step 5: Solve for x
x = 7,085,651,904.06/99,813.80 - Step 6: Final answer
x = 70,988.70
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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.