Finding the Fourth Proportional to 122,157,782.21, 168,576,551.73 and 90,935,455.79
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Solution
The fourth proportional to 122,157,782.21, 168,576,551.73 and 90,935,455.79 is: 125,490,044.84
Step by Step Solution
- Step 1: Write the proportion equation
122,157,782.21 : 168,576,551.73 = 90,935,455.79 : x - Step 2: Convert to fraction form
122,157,782.21/168,576,551.73 = 90,935,455.79/x - Step 3: Cross multiply
122,157,782.21x = 168,576,551.73 × 90,935,455.79 - Step 4: Simplify right side
122,157,782.21x = 15,329,585,567,495,504 - Step 5: Solve for x
x = 15,329,585,567,495,504/122,157,782.21 - Step 6: Final answer
x = 125,490,044.84
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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.