Finding the Fourth Proportional to 135,070.81, 186,397.01 and 74,645.65
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Solution
The fourth proportional to 135,070.81, 186,397.01 and 74,645.65 is: 103,010.60
Step by Step Solution
- Step 1: Write the proportion equation
135,070.81 : 186,397.01 = 74,645.65 : x - Step 2: Convert to fraction form
135,070.81/186,397.01 = 74,645.65/x - Step 3: Cross multiply
135,070.81x = 186,397.01 × 74,645.65 - Step 4: Simplify right side
135,070.81x = 13,913,725,596.28 - Step 5: Solve for x
x = 13,913,725,596.28/135,070.81 - Step 6: Final answer
x = 103,010.60
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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.