Finding the Fourth Proportional to 128,012,629.12, 176,657,874.24 and 69,275,279.52
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Solution
The fourth proportional to 128,012,629.12, 176,657,874.24 and 69,275,279.52 is: 95,600,127.12
Step by Step Solution
- Step 1: Write the proportion equation
128,012,629.12 : 176,657,874.24 = 69,275,279.52 : x - Step 2: Convert to fraction form
128,012,629.12/176,657,874.24 = 69,275,279.52/x - Step 3: Cross multiply
128,012,629.12x = 176,657,874.24 × 69,275,279.52 - Step 4: Simplify right side
128,012,629.12x = 12,238,023,617,385,008 - Step 5: Solve for x
x = 12,238,023,617,385,008/128,012,629.12 - Step 6: Final answer
x = 95,600,127.12
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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.