Finding the Fourth Proportional to 103,424.83, 142,742.88 and 96,671.09
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Solution
The fourth proportional to 103,424.83, 142,742.88 and 96,671.09 is: 133,421.64
Step by Step Solution
- Step 1: Write the proportion equation
103,424.83 : 142,742.88 = 96,671.09 : x - Step 2: Convert to fraction form
103,424.83/142,742.88 = 96,671.09/x - Step 3: Cross multiply
103,424.83x = 142,742.88 × 96,671.09 - Step 4: Simplify right side
103,424.83x = 13,799,110,156.20 - Step 5: Solve for x
x = 13,799,110,156.20/103,424.83 - Step 6: Final answer
x = 133,421.64
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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.