Finding the Fourth Proportional to 153,682,765.85, 212,083,899.58 and 84,068,147.41
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Solution
The fourth proportional to 153,682,765.85, 212,083,899.58 and 84,068,147.41 is: 116,014,963.91
Step by Step Solution
- Step 1: Write the proportion equation
153,682,765.85 : 212,083,899.58 = 84,068,147.41 : x - Step 2: Convert to fraction form
153,682,765.85/212,083,899.58 = 84,068,147.41/x - Step 3: Cross multiply
153,682,765.85x = 212,083,899.58 × 84,068,147.41 - Step 4: Simplify right side
153,682,765.85x = 17,829,500,533,946,924 - Step 5: Solve for x
x = 17,829,500,533,946,924/153,682,765.85 - Step 6: Final answer
x = 116,014,963.91
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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.