Finding the Fourth Proportional to 128,012,954.48, 176,658,316.88 and 69,275,604.00
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Solution
The fourth proportional to 128,012,954.48, 176,658,316.88 and 69,275,604.00 is: 95,600,571.47
Step by Step Solution
- Step 1: Write the proportion equation
128,012,954.48 : 176,658,316.88 = 69,275,604.00 : x - Step 2: Convert to fraction form
128,012,954.48/176,658,316.88 = 69,275,604.00/x - Step 3: Cross multiply
128,012,954.48x = 176,658,316.88 × 69,275,604.00 - Step 4: Simplify right side
128,012,954.48x = 12,238,111,603,801,486 - Step 5: Solve for x
x = 12,238,111,603,801,486/128,012,954.48 - Step 6: Final answer
x = 95,600,571.47
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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.