Finding the Fourth Proportional to 189,026.31, 260,855.53 and 102,985.05
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Solution
The fourth proportional to 189,026.31, 260,855.53 and 102,985.05 is: 142,118.95
Step by Step Solution
- Step 1: Write the proportion equation
189,026.31 : 260,855.53 = 102,985.05 : x - Step 2: Convert to fraction form
189,026.31/260,855.53 = 102,985.05/x - Step 3: Cross multiply
189,026.31x = 260,855.53 × 102,985.05 - Step 4: Simplify right side
189,026.31x = 26,864,219,799.83 - Step 5: Solve for x
x = 26,864,219,799.83/189,026.31 - Step 6: Final answer
x = 142,118.95
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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.