Finding the Fourth Proportional to 191,238.12, 286,854.84 and 85,982.76
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Solution
The fourth proportional to 191,238.12, 286,854.84 and 85,982.76 is: 128,973.09
Step by Step Solution
- Step 1: Write the proportion equation
191,238.12 : 286,854.84 = 85,982.76 : x - Step 2: Convert to fraction form
191,238.12/286,854.84 = 85,982.76/x - Step 3: Cross multiply
191,238.12x = 286,854.84 × 85,982.76 - Step 4: Simplify right side
191,238.12x = 24,664,570,862.56 - Step 5: Solve for x
x = 24,664,570,862.56/191,238.12 - Step 6: Final answer
x = 128,973.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.