Finding the Fourth Proportional to 128,024.39, 191,941.45 and 61,401.08
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Solution
The fourth proportional to 128,024.39, 191,941.45 and 61,401.08 is: 92,055.99
Step by Step Solution
- Step 1: Write the proportion equation
128,024.39 : 191,941.45 = 61,401.08 : x - Step 2: Convert to fraction form
128,024.39/191,941.45 = 61,401.08/x - Step 3: Cross multiply
128,024.39x = 191,941.45 × 61,401.08 - Step 4: Simplify right side
128,024.39x = 11,785,412,326.77 - Step 5: Solve for x
x = 11,785,412,326.77/128,024.39 - Step 6: Final answer
x = 92,055.99
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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.