Finding the Fourth Proportional to 156,688.95, 216,230.75 and 85,068.99
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Solution
The fourth proportional to 156,688.95, 216,230.75 and 85,068.99 is: 117,395.21
Step by Step Solution
- Step 1: Write the proportion equation
156,688.95 : 216,230.75 = 85,068.99 : x - Step 2: Convert to fraction form
156,688.95/216,230.75 = 85,068.99/x - Step 3: Cross multiply
156,688.95x = 216,230.75 × 85,068.99 - Step 4: Simplify right side
156,688.95x = 18,394,531,509.44 - Step 5: Solve for x
x = 18,394,531,509.44/156,688.95 - Step 6: Final answer
x = 117,395.21
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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.