Finding the Fourth Proportional to 128,199,139.80, 176,914,879.43 and 69,461,851.06
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Solution
The fourth proportional to 128,199,139.80, 176,914,879.43 and 69,461,851.06 is: 95,857,390.50
Step by Step Solution
- Step 1: Write the proportion equation
128,199,139.80 : 176,914,879.43 = 69,461,851.06 : x - Step 2: Convert to fraction form
128,199,139.80/176,914,879.43 = 69,461,851.06/x - Step 3: Cross multiply
128,199,139.80x = 176,914,879.43 × 69,461,851.06 - Step 4: Simplify right side
128,199,139.80x = 12,288,835,005,264,518 - Step 5: Solve for x
x = 12,288,835,005,264,518/128,199,139.80 - Step 6: Final answer
x = 95,857,390.50
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.