Finding the Fourth Proportional to 156,378.24, 234,683.52 and 86,317.44
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Solution
The fourth proportional to 156,378.24, 234,683.52 and 86,317.44 is: 129,540.28
Step by Step Solution
- Step 1: Write the proportion equation
156,378.24 : 234,683.52 = 86,317.44 : x - Step 2: Convert to fraction form
156,378.24/234,683.52 = 86,317.44/x - Step 3: Cross multiply
156,378.24x = 234,683.52 × 86,317.44 - Step 4: Simplify right side
156,378.24x = 20,257,280,656.59 - Step 5: Solve for x
x = 20,257,280,656.59/156,378.24 - Step 6: Final answer
x = 129,540.28
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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.