Finding the Fourth Proportional to 130,970.08, 180,739.92 and 71,354.08
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Solution
The fourth proportional to 130,970.08, 180,739.92 and 71,354.08 is: 98,469.29
Step by Step Solution
- Step 1: Write the proportion equation
130,970.08 : 180,739.92 = 71,354.08 : x - Step 2: Convert to fraction form
130,970.08/180,739.92 = 71,354.08/x - Step 3: Cross multiply
130,970.08x = 180,739.92 × 71,354.08 - Step 4: Simplify right side
130,970.08x = 12,896,530,710.87 - Step 5: Solve for x
x = 12,896,530,710.87/130,970.08 - Step 6: Final answer
x = 98,469.29
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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.