Finding the Fourth Proportional to 128,181.99, 176,885.76 and 73,730.01
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Solution
The fourth proportional to 128,181.99, 176,885.76 and 73,730.01 is: 101,744.32
Step by Step Solution
- Step 1: Write the proportion equation
128,181.99 : 176,885.76 = 73,730.01 : x - Step 2: Convert to fraction form
128,181.99/176,885.76 = 73,730.01/x - Step 3: Cross multiply
128,181.99x = 176,885.76 × 73,730.01 - Step 4: Simplify right side
128,181.99x = 13,041,788,853.66 - Step 5: Solve for x
x = 13,041,788,853.66/128,181.99 - Step 6: Final answer
x = 101,744.32
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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.