Finding the Fourth Proportional to 130,723.73, 180,398.76 and 74,135.11
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Solution
The fourth proportional to 130,723.73, 180,398.76 and 74,135.11 is: 102,306.45
Step by Step Solution
- Step 1: Write the proportion equation
130,723.73 : 180,398.76 = 74,135.11 : x - Step 2: Convert to fraction form
130,723.73/180,398.76 = 74,135.11/x - Step 3: Cross multiply
130,723.73x = 180,398.76 × 74,135.11 - Step 4: Simplify right side
130,723.73x = 13,373,881,525.71 - Step 5: Solve for x
x = 13,373,881,525.71/130,723.73 - Step 6: Final answer
x = 102,306.45
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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.