Finding the Fourth Proportional to 180,921.05, 249,660.87 and 100,342.79
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Solution
The fourth proportional to 180,921.05, 249,660.87 and 100,342.79 is: 138,467.40
Step by Step Solution
- Step 1: Write the proportion equation
180,921.05 : 249,660.87 = 100,342.79 : x - Step 2: Convert to fraction form
180,921.05/249,660.87 = 100,342.79/x - Step 3: Cross multiply
180,921.05x = 249,660.87 × 100,342.79 - Step 4: Simplify right side
180,921.05x = 25,051,668,249.63 - Step 5: Solve for x
x = 25,051,668,249.63/180,921.05 - Step 6: Final answer
x = 138,467.40
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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.