Finding the Fourth Proportional to 145,977.93, 201,449.84 and 78,909.93
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Solution
The fourth proportional to 145,977.93, 201,449.84 and 78,909.93 is: 108,895.86
Step by Step Solution
- Step 1: Write the proportion equation
145,977.93 : 201,449.84 = 78,909.93 : x - Step 2: Convert to fraction form
145,977.93/201,449.84 = 78,909.93/x - Step 3: Cross multiply
145,977.93x = 201,449.84 × 78,909.93 - Step 4: Simplify right side
145,977.93x = 15,896,392,378.36 - Step 5: Solve for x
x = 15,896,392,378.36/145,977.93 - Step 6: Final answer
x = 108,895.86
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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.