Finding the Fourth Proportional to 128,325.06, 177,073.08 and 70,956.54
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Solution
The fourth proportional to 128,325.06, 177,073.08 and 70,956.54 is: 97,911.45
Step by Step Solution
- Step 1: Write the proportion equation
128,325.06 : 177,073.08 = 70,956.54 : x - Step 2: Convert to fraction form
128,325.06/177,073.08 = 70,956.54/x - Step 3: Cross multiply
128,325.06x = 177,073.08 × 70,956.54 - Step 4: Simplify right side
128,325.06x = 12,564,493,083.94 - Step 5: Solve for x
x = 12,564,493,083.94/128,325.06 - Step 6: Final answer
x = 97,911.45
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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.