Finding the Fourth Proportional to 121,728,904.74, 167,887,938.06 and 107,013,106.62
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Solution
The fourth proportional to 121,728,904.74, 167,887,938.06 and 107,013,106.62 is: 147,591,977.88
Step by Step Solution
- Step 1: Write the proportion equation
121,728,904.74 : 167,887,938.06 = 107,013,106.62 : x - Step 2: Convert to fraction form
121,728,904.74/167,887,938.06 = 107,013,106.62/x - Step 3: Cross multiply
121,728,904.74x = 167,887,938.06 × 107,013,106.62 - Step 4: Simplify right side
121,728,904.74x = 17,966,209,815,826,738 - Step 5: Solve for x
x = 17,966,209,815,826,738/121,728,904.74 - Step 6: Final answer
x = 147,591,977.88
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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.