Finding the Fourth Proportional to 128,065,752.38, 176,730,795.33 and 69,328,415.60
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Solution
The fourth proportional to 128,065,752.38, 176,730,795.33 and 69,328,415.60 is: 95,673,244.41
Step by Step Solution
- Step 1: Write the proportion equation
128,065,752.38 : 176,730,795.33 = 69,328,415.60 : x - Step 2: Convert to fraction form
128,065,752.38/176,730,795.33 = 69,328,415.60/x - Step 3: Cross multiply
128,065,752.38x = 176,730,795.33 × 69,328,415.60 - Step 4: Simplify right side
128,065,752.38x = 12,252,466,027,073,126 - Step 5: Solve for x
x = 12,252,466,027,073,126/128,065,752.38 - Step 6: Final answer
x = 95,673,244.41
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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.