Finding the Fourth Proportional to 130,619.62, 180,257.05 and 73,271.65
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Solution
The fourth proportional to 130,619.62, 180,257.05 and 73,271.65 is: 101,115.99
Step by Step Solution
- Step 1: Write the proportion equation
130,619.62 : 180,257.05 = 73,271.65 : x - Step 2: Convert to fraction form
130,619.62/180,257.05 = 73,271.65/x - Step 3: Cross multiply
130,619.62x = 180,257.05 × 73,271.65 - Step 4: Simplify right side
130,619.62x = 13,207,731,111.27 - Step 5: Solve for x
x = 13,207,731,111.27/130,619.62 - Step 6: Final answer
x = 101,115.99
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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.