Finding the Fourth Proportional to 128,128.84, 176,720.50 and 110,253.80
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Solution
The fourth proportional to 128,128.84, 176,720.50 and 110,253.80 is: 152,066.52
Step by Step Solution
- Step 1: Write the proportion equation
128,128.84 : 176,720.50 = 110,253.80 : x - Step 2: Convert to fraction form
128,128.84/176,720.50 = 110,253.80/x - Step 3: Cross multiply
128,128.84x = 176,720.50 × 110,253.80 - Step 4: Simplify right side
128,128.84x = 19,484,106,662.90 - Step 5: Solve for x
x = 19,484,106,662.90/128,128.84 - Step 6: Final answer
x = 152,066.52
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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.