Finding the Fourth Proportional to 83,543.70, 125,315.55 and 79,655.70
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Solution
The fourth proportional to 83,543.70, 125,315.55 and 79,655.70 is: 119,483.55
Step by Step Solution
- Step 1: Write the proportion equation
83,543.70 : 125,315.55 = 79,655.70 : x - Step 2: Convert to fraction form
83,543.70/125,315.55 = 79,655.70/x - Step 3: Cross multiply
83,543.70x = 125,315.55 × 79,655.70 - Step 4: Simplify right side
83,543.70x = 9,982,097,856.14 - Step 5: Solve for x
x = 9,982,097,856.14/83,543.70 - Step 6: Final answer
x = 119,483.55
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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.