Finding the Fourth Proportional to 101,200.13, 139,658.39 and 55,877.99
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Solution
The fourth proportional to 101,200.13, 139,658.39 and 55,877.99 is: 77,112.85
Step by Step Solution
- Step 1: Write the proportion equation
101,200.13 : 139,658.39 = 55,877.99 : x - Step 2: Convert to fraction form
101,200.13/139,658.39 = 55,877.99/x - Step 3: Cross multiply
101,200.13x = 139,658.39 × 55,877.99 - Step 4: Simplify right side
101,200.13x = 7,803,829,561.24 - Step 5: Solve for x
x = 7,803,829,561.24/101,200.13 - Step 6: Final answer
x = 77,112.85
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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.