Finding the Fourth Proportional to 155,876,379,777.99, 215,109,395,307.18 and 84,591,009,801.99
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Solution
The fourth proportional to 155,876,379,777.99, 215,109,395,307.18 and 84,591,009,801.99 is: 116,735,588,758.52
Step by Step Solution
- Step 1: Write the proportion equation
155,876,379,777.99 : 215,109,395,307.18 = 84,591,009,801.99 : x - Step 2: Convert to fraction form
155,876,379,777.99/215,109,395,307.18 = 84,591,009,801.99/x - Step 3: Cross multiply
155,876,379,777.99x = 215,109,395,307.18 × 84,591,009,801.99 - Step 4: Simplify right side
155,876,379,777.99x = 18,196,320,966,929,805,213,696 - Step 5: Solve for x
x = 18,196,320,966,929,805,213,696/155,876,379,777.99 - Step 6: Final answer
x = 116,735,588,758.52
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1.5x scale
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.