Finding the Fourth Proportional to 156,435.81, 215,672.58 and 124,277.13
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Solution
The fourth proportional to 156,435.81, 215,672.58 and 124,277.13 is: 171,336.53
Step by Step Solution
- Step 1: Write the proportion equation
156,435.81 : 215,672.58 = 124,277.13 : x - Step 2: Convert to fraction form
156,435.81/215,672.58 = 124,277.13/x - Step 3: Cross multiply
156,435.81x = 215,672.58 × 124,277.13 - Step 4: Simplify right side
156,435.81x = 26,803,169,262.10 - Step 5: Solve for x
x = 26,803,169,262.10/156,435.81 - Step 6: Final answer
x = 171,336.53
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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.