Finding the Fourth Proportional to 130,543.74, 195,739.98 and 69,678.84
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Solution
The fourth proportional to 130,543.74, 195,739.98 and 69,678.84 is: 104,477.89
Step by Step Solution
- Step 1: Write the proportion equation
130,543.74 : 195,739.98 = 69,678.84 : x - Step 2: Convert to fraction form
130,543.74/195,739.98 = 69,678.84/x - Step 3: Cross multiply
130,543.74x = 195,739.98 × 69,678.84 - Step 4: Simplify right side
130,543.74x = 13,638,934,748.02 - Step 5: Solve for x
x = 13,638,934,748.02/130,543.74 - Step 6: Final answer
x = 104,477.89
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.