Finding the Fourth Proportional to 128,176,704.90, 176,882,875.05 and 69,438,949.86
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Solution
The fourth proportional to 128,176,704.90, 176,882,875.05 and 69,438,949.86 is: 95,825,221.14
Step by Step Solution
- Step 1: Write the proportion equation
128,176,704.90 : 176,882,875.05 = 69,438,949.86 : x - Step 2: Convert to fraction form
128,176,704.90/176,882,875.05 = 69,438,949.86/x - Step 3: Cross multiply
128,176,704.90x = 176,882,875.05 × 69,438,949.86 - Step 4: Simplify right side
128,176,704.90x = 12,282,561,091,689,596 - Step 5: Solve for x
x = 12,282,561,091,689,596/128,176,704.90 - Step 6: Final answer
x = 95,825,221.14
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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.