Finding the Fourth Proportional to 130,785.36, 180,478.32 and 74,207.28
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Solution
The fourth proportional to 130,785.36, 180,478.32 and 74,207.28 is: 102,402.94
Step by Step Solution
- Step 1: Write the proportion equation
130,785.36 : 180,478.32 = 74,207.28 : x - Step 2: Convert to fraction form
130,785.36/180,478.32 = 74,207.28/x - Step 3: Cross multiply
130,785.36x = 180,478.32 × 74,207.28 - Step 4: Simplify right side
130,785.36x = 13,392,805,226.17 - Step 5: Solve for x
x = 13,392,805,226.17/130,785.36 - Step 6: Final answer
x = 102,402.94
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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.