Finding the Fourth Proportional to 136,354,431.30, 188,163,678.74 and 76,814,340.45
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Solution
The fourth proportional to 136,354,431.30, 188,163,678.74 and 76,814,340.45 is: 106,000,727.23
Step by Step Solution
- Step 1: Write the proportion equation
136,354,431.30 : 188,163,678.74 = 76,814,340.45 : x - Step 2: Convert to fraction form
136,354,431.30/188,163,678.74 = 76,814,340.45/x - Step 3: Cross multiply
136,354,431.30x = 188,163,678.74 × 76,814,340.45 - Step 4: Simplify right side
136,354,431.30x = 14,453,668,879,058,788 - Step 5: Solve for x
x = 14,453,668,879,058,788/136,354,431.30 - Step 6: Final answer
x = 106,000,727.23
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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.