Finding the Fourth Proportional to 113,686.08, 156,860.16 and 68,349.12
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Solution
The fourth proportional to 113,686.08, 156,860.16 and 68,349.12 is: 94,305.78
Step by Step Solution
- Step 1: Write the proportion equation
113,686.08 : 156,860.16 = 68,349.12 : x - Step 2: Convert to fraction form
113,686.08/156,860.16 = 68,349.12/x - Step 3: Cross multiply
113,686.08x = 156,860.16 × 68,349.12 - Step 4: Simplify right side
113,686.08x = 10,721,253,899.06 - Step 5: Solve for x
x = 10,721,253,899.06/113,686.08 - Step 6: Final answer
x = 94,305.78
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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.