Finding the Fourth Proportional to 121,817,246.58, 167,921,825.64 and 74,687,065.92
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Solution
The fourth proportional to 121,817,246.58, 167,921,825.64 and 74,687,065.92 is: 102,954,128.53
Step by Step Solution
- Step 1: Write the proportion equation
121,817,246.58 : 167,921,825.64 = 74,687,065.92 : x - Step 2: Convert to fraction form
121,817,246.58/167,921,825.64 = 74,687,065.92/x - Step 3: Cross multiply
121,817,246.58x = 167,921,825.64 × 74,687,065.92 - Step 4: Simplify right side
121,817,246.58x = 12,541,588,460,981,426 - Step 5: Solve for x
x = 12,541,588,460,981,426/121,817,246.58 - Step 6: Final answer
x = 102,954,128.53
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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.