Finding the Fourth Proportional to 91,101.70, 136,652.55 and 79,437.70
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Solution
The fourth proportional to 91,101.70, 136,652.55 and 79,437.70 is: 119,156.55
Step by Step Solution
- Step 1: Write the proportion equation
91,101.70 : 136,652.55 = 79,437.70 : x - Step 2: Convert to fraction form
91,101.70/136,652.55 = 79,437.70/x - Step 3: Cross multiply
91,101.70x = 136,652.55 × 79,437.70 - Step 4: Simplify right side
91,101.70x = 10,855,364,271.14 - Step 5: Solve for x
x = 10,855,364,271.14/91,101.70 - Step 6: Final answer
x = 119,156.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.