Finding the Fourth Proportional to 130,957.24, 180,723.54 and 74,368.84
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Solution
The fourth proportional to 130,957.24, 180,723.54 and 74,368.84 is: 102,630.45
Step by Step Solution
- Step 1: Write the proportion equation
130,957.24 : 180,723.54 = 74,368.84 : x - Step 2: Convert to fraction form
130,957.24/180,723.54 = 74,368.84/x - Step 3: Cross multiply
130,957.24x = 180,723.54 × 74,368.84 - Step 4: Simplify right side
130,957.24x = 13,440,200,030.49 - Step 5: Solve for x
x = 13,440,200,030.49/130,957.24 - Step 6: Final answer
x = 102,630.45
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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.