Finding the Fourth Proportional to 122,886.05, 169,595.51 and 75,171.15
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Solution
The fourth proportional to 122,886.05, 169,595.51 and 75,171.15 is: 103,743.99
Step by Step Solution
- Step 1: Write the proportion equation
122,886.05 : 169,595.51 = 75,171.15 : x - Step 2: Convert to fraction form
122,886.05/169,595.51 = 75,171.15/x - Step 3: Cross multiply
122,886.05x = 169,595.51 × 75,171.15 - Step 4: Simplify right side
122,886.05x = 12,748,689,145.68 - Step 5: Solve for x
x = 12,748,689,145.68/122,886.05 - Step 6: Final answer
x = 103,743.99
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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.