Finding the Fourth Proportional to 128,295,342.18, 177,051,306.33 and 72,539,564.90
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Solution
The fourth proportional to 128,295,342.18, 177,051,306.33 and 72,539,564.90 is: 100,106,710.87
Step by Step Solution
- Step 1: Write the proportion equation
128,295,342.18 : 177,051,306.33 = 72,539,564.90 : x - Step 2: Convert to fraction form
128,295,342.18/177,051,306.33 = 72,539,564.90/x - Step 3: Cross multiply
128,295,342.18x = 177,051,306.33 × 72,539,564.90 - Step 4: Simplify right side
128,295,342.18x = 12,843,224,725,269,560 - Step 5: Solve for x
x = 12,843,224,725,269,560/128,295,342.18 - Step 6: Final answer
x = 100,106,710.87
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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.