Finding the Fourth Proportional to 115,421.20, 173,164.20 and 56,258.80
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Solution
The fourth proportional to 115,421.20, 173,164.20 and 56,258.80 is: 84,403.99
Step by Step Solution
- Step 1: Write the proportion equation
115,421.20 : 173,164.20 = 56,258.80 : x - Step 2: Convert to fraction form
115,421.20/173,164.20 = 56,258.80/x - Step 3: Cross multiply
115,421.20x = 173,164.20 × 56,258.80 - Step 4: Simplify right side
115,421.20x = 9,742,010,094.96 - Step 5: Solve for x
x = 9,742,010,094.96/115,421.20 - Step 6: Final answer
x = 84,403.99
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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.