Finding the Fourth Proportional to 101,276.42, 139,670.64 and 84,336.74
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Solution
The fourth proportional to 101,276.42, 139,670.64 and 84,336.74 is: 116,309.07
Step by Step Solution
- Step 1: Write the proportion equation
101,276.42 : 139,670.64 = 84,336.74 : x - Step 2: Convert to fraction form
101,276.42/139,670.64 = 84,336.74/x - Step 3: Cross multiply
101,276.42x = 139,670.64 × 84,336.74 - Step 4: Simplify right side
101,276.42x = 11,779,366,451.31 - Step 5: Solve for x
x = 11,779,366,451.31/101,276.42 - Step 6: Final answer
x = 116,309.07
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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.