Finding the Fourth Proportional to 101,126.28, 139,548.26 and 55,808.53
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Solution
The fourth proportional to 101,126.28, 139,548.26 and 55,808.53 is: 77,012.45
Step by Step Solution
- Step 1: Write the proportion equation
101,126.28 : 139,548.26 = 55,808.53 : x - Step 2: Convert to fraction form
101,126.28/139,548.26 = 55,808.53/x - Step 3: Cross multiply
101,126.28x = 139,548.26 × 55,808.53 - Step 4: Simplify right side
101,126.28x = 7,787,983,115.14 - Step 5: Solve for x
x = 7,787,983,115.14/101,126.28 - Step 6: Final answer
x = 77,012.45
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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.