Finding the Fourth Proportional to 156,497.18, 215,966.21 and 84,877.18
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Solution
The fourth proportional to 156,497.18, 215,966.21 and 84,877.18 is: 117,130.56
Step by Step Solution
- Step 1: Write the proportion equation
156,497.18 : 215,966.21 = 84,877.18 : x - Step 2: Convert to fraction form
156,497.18/215,966.21 = 84,877.18/x - Step 3: Cross multiply
156,497.18x = 215,966.21 × 84,877.18 - Step 4: Simplify right side
156,497.18x = 18,330,602,880.09 - Step 5: Solve for x
x = 18,330,602,880.09/156,497.18 - Step 6: Final answer
x = 117,130.56
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1.5x scale
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.