Finding the Fourth Proportional to 127,815.58, 176,386.74 and 70,457.12
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Solution
The fourth proportional to 127,815.58, 176,386.74 and 70,457.12 is: 97,231.50
Step by Step Solution
- Step 1: Write the proportion equation
127,815.58 : 176,386.74 = 70,457.12 : x - Step 2: Convert to fraction form
127,815.58/176,386.74 = 70,457.12/x - Step 3: Cross multiply
127,815.58x = 176,386.74 × 70,457.12 - Step 4: Simplify right side
127,815.58x = 12,427,700,824.66 - Step 5: Solve for x
x = 12,427,700,824.66/127,815.58 - Step 6: Final answer
x = 97,231.50
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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.