Finding the Fourth Proportional to 185,931.41, 278,741.67 and 86,163.09
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Solution
The fourth proportional to 185,931.41, 278,741.67 and 86,163.09 is: 129,172.60
Step by Step Solution
- Step 1: Write the proportion equation
185,931.41 : 278,741.67 = 86,163.09 : x - Step 2: Convert to fraction form
185,931.41/278,741.67 = 86,163.09/x - Step 3: Cross multiply
185,931.41x = 278,741.67 × 86,163.09 - Step 4: Simplify right side
185,931.41x = 24,017,243,598.96 - Step 5: Solve for x
x = 24,017,243,598.96/185,931.41 - Step 6: Final answer
x = 129,172.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.