Finding the Fourth Proportional to 130,531.14, 180,132.93 and 76,816.26
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Solution
The fourth proportional to 130,531.14, 180,132.93 and 76,816.26 is: 106,006.41
Step by Step Solution
- Step 1: Write the proportion equation
130,531.14 : 180,132.93 = 76,816.26 : x - Step 2: Convert to fraction form
130,531.14/180,132.93 = 76,816.26/x - Step 3: Cross multiply
130,531.14x = 180,132.93 × 76,816.26 - Step 4: Simplify right side
130,531.14x = 13,837,137,985.44 - Step 5: Solve for x
x = 13,837,137,985.44/130,531.14 - Step 6: Final answer
x = 106,006.41
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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.