Finding the Fourth Proportional to 128,127.84, 176,719.12 and 110,252.80
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Solution
The fourth proportional to 128,127.84, 176,719.12 and 110,252.80 is: 152,065.14
Step by Step Solution
- Step 1: Write the proportion equation
128,127.84 : 176,719.12 = 110,252.80 : x - Step 2: Convert to fraction form
128,127.84/176,719.12 = 110,252.80/x - Step 3: Cross multiply
128,127.84x = 176,719.12 × 110,252.80 - Step 4: Simplify right side
128,127.84x = 19,483,777,793.54 - Step 5: Solve for x
x = 19,483,777,793.54/128,127.84 - Step 6: Final answer
x = 152,065.14
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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.