Finding the Fourth Proportional to 156,878.02, 216,493.05 and 85,258.09
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Solution
The fourth proportional to 156,878.02, 216,493.05 and 85,258.09 is: 117,656.92
Step by Step Solution
- Step 1: Write the proportion equation
156,878.02 : 216,493.05 = 85,258.09 : x - Step 2: Convert to fraction form
156,878.02/216,493.05 = 85,258.09/x - Step 3: Cross multiply
156,878.02x = 216,493.05 × 85,258.09 - Step 4: Simplify right side
156,878.02x = 18,457,783,941.27 - Step 5: Solve for x
x = 18,457,783,941.27/156,878.02 - Step 6: Final answer
x = 117,656.92
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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.