Finding the Fourth Proportional to 128,026.91, 191,897.17 and 47,987.84
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Solution
The fourth proportional to 128,026.91, 191,897.17 and 47,987.84 is: 71,928.09
Step by Step Solution
- Step 1: Write the proportion equation
128,026.91 : 191,897.17 = 47,987.84 : x - Step 2: Convert to fraction form
128,026.91/191,897.17 = 47,987.84/x - Step 3: Cross multiply
128,026.91x = 191,897.17 × 47,987.84 - Step 4: Simplify right side
128,026.91x = 9,208,731,050.19 - Step 5: Solve for x
x = 9,208,731,050.19/128,026.91 - Step 6: Final answer
x = 71,928.09
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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.