Finding the Fourth Proportional to 99,045.75, 136,683.36 and 56,604.18
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Solution
The fourth proportional to 99,045.75, 136,683.36 and 56,604.18 is: 78,113.90
Step by Step Solution
- Step 1: Write the proportion equation
99,045.75 : 136,683.36 = 56,604.18 : x - Step 2: Convert to fraction form
99,045.75/136,683.36 = 56,604.18/x - Step 3: Cross multiply
99,045.75x = 136,683.36 × 56,604.18 - Step 4: Simplify right side
99,045.75x = 7,736,849,512.44 - Step 5: Solve for x
x = 7,736,849,512.44/99,045.75 - Step 6: Final answer
x = 78,113.90
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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.