Finding the Fourth Proportional to 143,925.12, 198,771.57 and 109,567.08
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Solution
The fourth proportional to 143,925.12, 198,771.57 and 109,567.08 is: 151,320.50
Step by Step Solution
- Step 1: Write the proportion equation
143,925.12 : 198,771.57 = 109,567.08 : x - Step 2: Convert to fraction form
143,925.12/198,771.57 = 109,567.08/x - Step 3: Cross multiply
143,925.12x = 198,771.57 × 109,567.08 - Step 4: Simplify right side
143,925.12x = 21,778,820,511.92 - Step 5: Solve for x
x = 21,778,820,511.92/143,925.12 - Step 6: Final answer
x = 151,320.50
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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.