Finding the Fourth Proportional to 143,447.74, 214,711.53 and 76,721.02
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Solution
The fourth proportional to 143,447.74, 214,711.53 and 76,721.02 is: 114,835.46
Step by Step Solution
- Step 1: Write the proportion equation
143,447.74 : 214,711.53 = 76,721.02 : x - Step 2: Convert to fraction form
143,447.74/214,711.53 = 76,721.02/x - Step 3: Cross multiply
143,447.74x = 214,711.53 × 76,721.02 - Step 4: Simplify right side
143,447.74x = 16,472,887,587.36 - Step 5: Solve for x
x = 16,472,887,587.36/143,447.74 - Step 6: Final answer
x = 114,835.46
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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.