Finding the Fourth Proportional to 99,720.68, 137,614.98 and 54,399.68
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Solution
The fourth proportional to 99,720.68, 137,614.98 and 54,399.68 is: 75,071.80
Step by Step Solution
- Step 1: Write the proportion equation
99,720.68 : 137,614.98 = 54,399.68 : x - Step 2: Convert to fraction form
99,720.68/137,614.98 = 54,399.68/x - Step 3: Cross multiply
99,720.68x = 137,614.98 × 54,399.68 - Step 4: Simplify right side
99,720.68x = 7,486,210,875.21 - Step 5: Solve for x
x = 7,486,210,875.21/99,720.68 - Step 6: Final answer
x = 75,071.80
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.