Finding the Fourth Proportional to 128,977.10, 193,465.65 and 97,484.30
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Solution
The fourth proportional to 128,977.10, 193,465.65 and 97,484.30 is: 146,226.45
Step by Step Solution
- Step 1: Write the proportion equation
128,977.10 : 193,465.65 = 97,484.30 : x - Step 2: Convert to fraction form
128,977.10/193,465.65 = 97,484.30/x - Step 3: Cross multiply
128,977.10x = 193,465.65 × 97,484.30 - Step 4: Simplify right side
128,977.10x = 18,859,863,464.30 - Step 5: Solve for x
x = 18,859,863,464.30/128,977.10 - Step 6: Final answer
x = 146,226.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.