Finding the Fourth Proportional to 121,750.64, 168,122.76 and 76,507.04
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Solution
The fourth proportional to 121,750.64, 168,122.76 and 76,507.04 is: 105,646.88
Step by Step Solution
- Step 1: Write the proportion equation
121,750.64 : 168,122.76 = 76,507.04 : x - Step 2: Convert to fraction form
121,750.64/168,122.76 = 76,507.04/x - Step 3: Cross multiply
121,750.64x = 168,122.76 × 76,507.04 - Step 4: Simplify right side
121,750.64x = 12,862,574,724.23 - Step 5: Solve for x
x = 12,862,574,724.23/121,750.64 - Step 6: Final answer
x = 105,646.88
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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.