Finding the Fourth Proportional to 128,952.84, 177,909.30 and 84,266.76
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Solution
The fourth proportional to 128,952.84, 177,909.30 and 84,266.76 is: 116,258.32
Step by Step Solution
- Step 1: Write the proportion equation
128,952.84 : 177,909.30 = 84,266.76 : x - Step 2: Convert to fraction form
128,952.84/177,909.30 = 84,266.76/x - Step 3: Cross multiply
128,952.84x = 177,909.30 × 84,266.76 - Step 4: Simplify right side
128,952.84x = 14,991,840,284.87 - Step 5: Solve for x
x = 14,991,840,284.87/128,952.84 - Step 6: Final answer
x = 116,258.32
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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.