Finding the Fourth Proportional to 144,367,915.80, 216,551,873.70 and 86,972,287.80
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Solution
The fourth proportional to 144,367,915.80, 216,551,873.70 and 86,972,287.80 is: 130,458,431.70
Step by Step Solution
- Step 1: Write the proportion equation
144,367,915.80 : 216,551,873.70 = 86,972,287.80 : x - Step 2: Convert to fraction form
144,367,915.80/216,551,873.70 = 86,972,287.80/x - Step 3: Cross multiply
144,367,915.80x = 216,551,873.70 × 86,972,287.80 - Step 4: Simplify right side
144,367,915.80x = 18,834,011,883,065,648 - Step 5: Solve for x
x = 18,834,011,883,065,648/144,367,915.80 - Step 6: Final answer
x = 130,458,431.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.