Finding the Fourth Proportional to 120,221,177.43, 165,905,544.09 and 65,217,033.93
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Solution
The fourth proportional to 120,221,177.43, 165,905,544.09 and 65,217,033.93 is: 89,999,680.00
Step by Step Solution
- Step 1: Write the proportion equation
120,221,177.43 : 165,905,544.09 = 65,217,033.93 : x - Step 2: Convert to fraction form
120,221,177.43/165,905,544.09 = 65,217,033.93/x - Step 3: Cross multiply
120,221,177.43x = 165,905,544.09 × 65,217,033.93 - Step 4: Simplify right side
120,221,177.43x = 10,819,867,498,092,642 - Step 5: Solve for x
x = 10,819,867,498,092,642/120,221,177.43 - Step 6: Final answer
x = 89,999,680.00
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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.