Finding the Fourth Proportional to 130,723.67, 180,398.67 and 74,135.05
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Solution
The fourth proportional to 130,723.67, 180,398.67 and 74,135.05 is: 102,306.37
Step by Step Solution
- Step 1: Write the proportion equation
130,723.67 : 180,398.67 = 74,135.05 : x - Step 2: Convert to fraction form
130,723.67/180,398.67 = 74,135.05/x - Step 3: Cross multiply
130,723.67x = 180,398.67 × 74,135.05 - Step 4: Simplify right side
130,723.67x = 13,373,863,518.39 - Step 5: Solve for x
x = 13,373,863,518.39/130,723.67 - Step 6: Final answer
x = 102,306.37
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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.