Finding the Fourth Proportional to 156,888.64, 216,508.01 and 85,268.68
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Solution
The fourth proportional to 156,888.64, 216,508.01 and 85,268.68 is: 117,671.70
Step by Step Solution
- Step 1: Write the proportion equation
156,888.64 : 216,508.01 = 85,268.68 : x - Step 2: Convert to fraction form
156,888.64/216,508.01 = 85,268.68/x - Step 3: Cross multiply
156,888.64x = 216,508.01 × 85,268.68 - Step 4: Simplify right side
156,888.64x = 18,461,352,222.13 - Step 5: Solve for x
x = 18,461,352,222.13/156,888.64 - Step 6: Final answer
x = 117,671.70
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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.