Finding the Fourth Proportional to 87,120,231.70, 130,680,347.55 and 82,868,703.70
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Solution
The fourth proportional to 87,120,231.70, 130,680,347.55 and 82,868,703.70 is: 124,303,055.55
Step by Step Solution
- Step 1: Write the proportion equation
87,120,231.70 : 130,680,347.55 = 82,868,703.70 : x - Step 2: Convert to fraction form
87,120,231.70/130,680,347.55 = 82,868,703.70/x - Step 3: Cross multiply
87,120,231.70x = 130,680,347.55 × 82,868,703.70 - Step 4: Simplify right side
87,120,231.70x = 10,829,311,000,533,972 - Step 5: Solve for x
x = 10,829,311,000,533,972/87,120,231.70 - Step 6: Final answer
x = 124,303,055.55
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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.