Finding the Fourth Proportional to 105,299.84, 145,219.68 and 87,366.44
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Solution
The fourth proportional to 105,299.84, 145,219.68 and 87,366.44 is: 120,487.61
Step by Step Solution
- Step 1: Write the proportion equation
105,299.84 : 145,219.68 = 87,366.44 : x - Step 2: Convert to fraction form
105,299.84/145,219.68 = 87,366.44/x - Step 3: Cross multiply
105,299.84x = 145,219.68 × 87,366.44 - Step 4: Simplify right side
105,299.84x = 12,687,326,459.54 - Step 5: Solve for x
x = 12,687,326,459.54/105,299.84 - Step 6: Final answer
x = 120,487.61
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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.