Finding the Fourth Proportional to 100,257.65, 138,346.35 and 57,807.98
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Solution
The fourth proportional to 100,257.65, 138,346.35 and 57,807.98 is: 79,769.70
Step by Step Solution
- Step 1: Write the proportion equation
100,257.65 : 138,346.35 = 57,807.98 : x - Step 2: Convert to fraction form
100,257.65/138,346.35 = 57,807.98/x - Step 3: Cross multiply
100,257.65x = 138,346.35 × 57,807.98 - Step 4: Simplify right side
100,257.65x = 7,997,522,053.10 - Step 5: Solve for x
x = 7,997,522,053.10/100,257.65 - Step 6: Final answer
x = 79,769.70
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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.