Finding the Fourth Proportional to 137,064.68, 189,156.48 and 83,340.80
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Solution
The fourth proportional to 137,064.68, 189,156.48 and 83,340.80 is: 115,014.70
Step by Step Solution
- Step 1: Write the proportion equation
137,064.68 : 189,156.48 = 83,340.80 : x - Step 2: Convert to fraction form
137,064.68/189,156.48 = 83,340.80/x - Step 3: Cross multiply
137,064.68x = 189,156.48 × 83,340.80 - Step 4: Simplify right side
137,064.68x = 15,764,452,368.38 - Step 5: Solve for x
x = 15,764,452,368.38/137,064.68 - Step 6: Final answer
x = 115,014.70
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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.