Finding the Fourth Proportional to 156,409.56, 216,023.28 and 106,021.08
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Solution
The fourth proportional to 156,409.56, 216,023.28 and 106,021.08 is: 146,429.81
Step by Step Solution
- Step 1: Write the proportion equation
156,409.56 : 216,023.28 = 106,021.08 : x - Step 2: Convert to fraction form
156,409.56/216,023.28 = 106,021.08/x - Step 3: Cross multiply
156,409.56x = 216,023.28 × 106,021.08 - Step 4: Simplify right side
156,409.56x = 22,903,021,450.74 - Step 5: Solve for x
x = 22,903,021,450.74/156,409.56 - Step 6: Final answer
x = 146,429.81
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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.