Finding the Fourth Proportional to 130,130.41, 179,578.73 and 72,769.08
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Solution
The fourth proportional to 130,130.41, 179,578.73 and 72,769.08 is: 100,420.63
Step by Step Solution
- Step 1: Write the proportion equation
130,130.41 : 179,578.73 = 72,769.08 : x - Step 2: Convert to fraction form
130,130.41/179,578.73 = 72,769.08/x - Step 3: Cross multiply
130,130.41x = 179,578.73 × 72,769.08 - Step 4: Simplify right side
130,130.41x = 13,067,778,205.29 - Step 5: Solve for x
x = 13,067,778,205.29/130,130.41 - Step 6: Final answer
x = 100,420.63
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1.5x scale
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.