Finding the Fourth Proportional to 118,407.39, 177,638.99 and 38,439.19
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Solution
The fourth proportional to 118,407.39, 177,638.99 and 38,439.19 is: 57,667.84
Step by Step Solution
- Step 1: Write the proportion equation
118,407.39 : 177,638.99 = 38,439.19 : x - Step 2: Convert to fraction form
118,407.39/177,638.99 = 38,439.19/x - Step 3: Cross multiply
118,407.39x = 177,638.99 × 38,439.19 - Step 4: Simplify right side
118,407.39x = 6,828,298,888.02 - Step 5: Solve for x
x = 6,828,298,888.02/118,407.39 - Step 6: Final answer
x = 57,667.84
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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.