Finding the Fourth Proportional to 128,203,780.80, 192,305,671.20 and 115,438,699.20
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Solution
The fourth proportional to 128,203,780.80, 192,305,671.20 and 115,438,699.20 is: 173,158,048.80
Step by Step Solution
- Step 1: Write the proportion equation
128,203,780.80 : 192,305,671.20 = 115,438,699.20 : x - Step 2: Convert to fraction form
128,203,780.80/192,305,671.20 = 115,438,699.20/x - Step 3: Cross multiply
128,203,780.80x = 192,305,671.20 × 115,438,699.20 - Step 4: Simplify right side
128,203,780.80x = 22,199,516,532,110,904 - Step 5: Solve for x
x = 22,199,516,532,110,904/128,203,780.80 - Step 6: Final answer
x = 173,158,048.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.