Finding the Fourth Proportional to 134,584.56, 185,726.64 and 78,028.68
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Solution
The fourth proportional to 134,584.56, 185,726.64 and 78,028.68 is: 107,679.55
Step by Step Solution
- Step 1: Write the proportion equation
134,584.56 : 185,726.64 = 78,028.68 : x - Step 2: Convert to fraction form
134,584.56/185,726.64 = 78,028.68/x - Step 3: Cross multiply
134,584.56x = 185,726.64 × 78,028.68 - Step 4: Simplify right side
134,584.56x = 14,492,004,560.04 - Step 5: Solve for x
x = 14,492,004,560.04/134,584.56 - Step 6: Final answer
x = 107,679.55
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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.