Finding the Fourth Proportional to 121,909.50, 168,268.93 and 70,932.08
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Solution
The fourth proportional to 121,909.50, 168,268.93 and 70,932.08 is: 97,905.95
Step by Step Solution
- Step 1: Write the proportion equation
121,909.50 : 168,268.93 = 70,932.08 : x - Step 2: Convert to fraction form
121,909.50/168,268.93 = 70,932.08/x - Step 3: Cross multiply
121,909.50x = 168,268.93 × 70,932.08 - Step 4: Simplify right side
121,909.50x = 11,935,665,204.27 - Step 5: Solve for x
x = 11,935,665,204.27/121,909.50 - Step 6: Final answer
x = 97,905.95
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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.