Finding the Fourth Proportional to 100,829.84, 139,140.36 and 55,506.88
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Solution
The fourth proportional to 100,829.84, 139,140.36 and 55,506.88 is: 76,596.84
Step by Step Solution
- Step 1: Write the proportion equation
100,829.84 : 139,140.36 = 55,506.88 : x - Step 2: Convert to fraction form
100,829.84/139,140.36 = 55,506.88/x - Step 3: Cross multiply
100,829.84x = 139,140.36 × 55,506.88 - Step 4: Simplify right side
100,829.84x = 7,723,247,265.68 - Step 5: Solve for x
x = 7,723,247,265.68/100,829.84 - Step 6: Final answer
x = 76,596.84
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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.