Finding the Fourth Proportional to 101,407.08, 139,942.08 and 56,695.08
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Solution
The fourth proportional to 101,407.08, 139,942.08 and 56,695.08 is: 78,239.38
Step by Step Solution
- Step 1: Write the proportion equation
101,407.08 : 139,942.08 = 56,695.08 : x - Step 2: Convert to fraction form
101,407.08/139,942.08 = 56,695.08/x - Step 3: Cross multiply
101,407.08x = 139,942.08 × 56,695.08 - Step 4: Simplify right side
101,407.08x = 7,934,027,420.97 - Step 5: Solve for x
x = 7,934,027,420.97/101,407.08 - Step 6: Final answer
x = 78,239.38
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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.