Finding the Fourth Proportional to 128,576,176,936.11, 177,445,049,709.39 and 77,136,663,314.79
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Solution
The fourth proportional to 128,576,176,936.11, 177,445,049,709.39 and 77,136,663,314.79 is: 106,454,549,998.88
Step by Step Solution
- Step 1: Write the proportion equation
128,576,176,936.11 : 177,445,049,709.39 = 77,136,663,314.79 : x - Step 2: Convert to fraction form
128,576,176,936.11/177,445,049,709.39 = 77,136,663,314.79/x - Step 3: Cross multiply
128,576,176,936.11x = 177,445,049,709.39 × 77,136,663,314.79 - Step 4: Simplify right side
128,576,176,936.11x = 13,687,519,056,309,392,506,880 - Step 5: Solve for x
x = 13,687,519,056,309,392,506,880/128,576,176,936.11 - Step 6: Final answer
x = 106,454,549,998.88
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1.5x scale
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.