Finding the Fourth Proportional to 138,944.05, 191,742.98 and 75,281.80
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Solution
The fourth proportional to 138,944.05, 191,742.98 and 75,281.80 is: 103,888.99
Step by Step Solution
- Step 1: Write the proportion equation
138,944.05 : 191,742.98 = 75,281.80 : x - Step 2: Convert to fraction form
138,944.05/191,742.98 = 75,281.80/x - Step 3: Cross multiply
138,944.05x = 191,742.98 × 75,281.80 - Step 4: Simplify right side
138,944.05x = 14,434,756,671.76 - Step 5: Solve for x
x = 14,434,756,671.76/138,944.05 - Step 6: Final answer
x = 103,888.99
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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.