Finding the Fourth Proportional to 130,106.79, 179,481.58 and 87,088.09
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Solution
The fourth proportional to 130,106.79, 179,481.58 and 87,088.09 is: 120,137.53
Step by Step Solution
- Step 1: Write the proportion equation
130,106.79 : 179,481.58 = 87,088.09 : x - Step 2: Convert to fraction form
130,106.79/179,481.58 = 87,088.09/x - Step 3: Cross multiply
130,106.79x = 179,481.58 × 87,088.09 - Step 4: Simplify right side
130,106.79x = 15,630,707,992.38 - Step 5: Solve for x
x = 15,630,707,992.38/130,106.79 - Step 6: Final answer
x = 120,137.53
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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.