Finding the Fourth Proportional to 128,745,728.99, 177,672,473.28 and 70,011,829.22
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Solution
The fourth proportional to 128,745,728.99, 177,672,473.28 and 70,011,829.22 is: 96,618,155.44
Step by Step Solution
- Step 1: Write the proportion equation
128,745,728.99 : 177,672,473.28 = 70,011,829.22 : x - Step 2: Convert to fraction form
128,745,728.99/177,672,473.28 = 70,011,829.22/x - Step 3: Cross multiply
128,745,728.99x = 177,672,473.28 × 70,011,829.22 - Step 4: Simplify right side
128,745,728.99x = 12,439,174,855,486,012 - Step 5: Solve for x
x = 12,439,174,855,486,012/128,745,728.99 - Step 6: Final answer
x = 96,618,155.44
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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.