Finding the Fourth Proportional to 180,785.55, 249,457.86 and 100,213.05
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Solution
The fourth proportional to 180,785.55, 249,457.86 and 100,213.05 is: 138,279.49
Step by Step Solution
- Step 1: Write the proportion equation
180,785.55 : 249,457.86 = 100,213.05 : x - Step 2: Convert to fraction form
180,785.55/249,457.86 = 100,213.05/x - Step 3: Cross multiply
180,785.55x = 249,457.86 × 100,213.05 - Step 4: Simplify right side
180,785.55x = 24,998,932,997.07 - Step 5: Solve for x
x = 24,998,932,997.07/180,785.55 - Step 6: Final answer
x = 138,279.49
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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.