Finding the Fourth Proportional to 124,905,642.57, 172,369,828.44 and 68,393,962.71
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Solution
The fourth proportional to 124,905,642.57, 172,369,828.44 and 68,393,962.71 is: 94,383,691.37
Step by Step Solution
- Step 1: Write the proportion equation
124,905,642.57 : 172,369,828.44 = 68,393,962.71 : x - Step 2: Convert to fraction form
124,905,642.57/172,369,828.44 = 68,393,962.71/x - Step 3: Cross multiply
124,905,642.57x = 172,369,828.44 × 68,393,962.71 - Step 4: Simplify right side
124,905,642.57x = 11,789,055,618,654,456 - Step 5: Solve for x
x = 11,789,055,618,654,456/124,905,642.57 - Step 6: Final answer
x = 94,383,691.37
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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.