Finding the Fourth Proportional to 87,120,403.20, 130,680,604.80 and 82,868,875.20
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Solution
The fourth proportional to 87,120,403.20, 130,680,604.80 and 82,868,875.20 is: 124,303,312.80
Step by Step Solution
- Step 1: Write the proportion equation
87,120,403.20 : 130,680,604.80 = 82,868,875.20 : x - Step 2: Convert to fraction form
87,120,403.20/130,680,604.80 = 82,868,875.20/x - Step 3: Cross multiply
87,120,403.20x = 130,680,604.80 × 82,868,875.20 - Step 4: Simplify right side
87,120,403.20x = 10,829,354,730,231,722 - Step 5: Solve for x
x = 10,829,354,730,231,722/87,120,403.20 - Step 6: Final answer
x = 124,303,312.80
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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.