Finding the Fourth Proportional to 130,976.68, 180,747.84 and 74,387.92
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Solution
The fourth proportional to 130,976.68, 180,747.84 and 74,387.92 is: 102,655.34
Step by Step Solution
- Step 1: Write the proportion equation
130,976.68 : 180,747.84 = 74,387.92 : x - Step 2: Convert to fraction form
130,976.68/180,747.84 = 74,387.92/x - Step 3: Cross multiply
130,976.68x = 180,747.84 × 74,387.92 - Step 4: Simplify right side
130,976.68x = 13,445,455,862.09 - Step 5: Solve for x
x = 13,445,455,862.09/130,976.68 - Step 6: Final answer
x = 102,655.34
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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.