Finding the Fourth Proportional to 128,053.05, 176,731.02 and 71,468.07
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Solution
The fourth proportional to 128,053.05, 176,731.02 and 71,468.07 is: 98,635.88
Step by Step Solution
- Step 1: Write the proportion equation
128,053.05 : 176,731.02 = 71,468.07 : x - Step 2: Convert to fraction form
128,053.05/176,731.02 = 71,468.07/x - Step 3: Cross multiply
128,053.05x = 176,731.02 × 71,468.07 - Step 4: Simplify right side
128,053.05x = 12,630,624,908.53 - Step 5: Solve for x
x = 12,630,624,908.53/128,053.05 - Step 6: Final answer
x = 98,635.88
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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.