Finding the Fourth Proportional to 149,031.99, 205,661.29 and 81,963.99
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Solution
The fourth proportional to 149,031.99, 205,661.29 and 81,963.99 is: 113,108.74
Step by Step Solution
- Step 1: Write the proportion equation
149,031.99 : 205,661.29 = 81,963.99 : x - Step 2: Convert to fraction form
149,031.99/205,661.29 = 81,963.99/x - Step 3: Cross multiply
149,031.99x = 205,661.29 × 81,963.99 - Step 4: Simplify right side
149,031.99x = 16,856,819,916.95 - Step 5: Solve for x
x = 16,856,819,916.95/149,031.99 - Step 6: Final answer
x = 113,108.74
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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.