Finding the Fourth Proportional to 136,354,430.30, 188,163,677.36 and 76,814,339.45
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Solution
The fourth proportional to 136,354,430.30, 188,163,677.36 and 76,814,339.45 is: 106,000,725.85
Step by Step Solution
- Step 1: Write the proportion equation
136,354,430.30 : 188,163,677.36 = 76,814,339.45 : x - Step 2: Convert to fraction form
136,354,430.30/188,163,677.36 = 76,814,339.45/x - Step 3: Cross multiply
136,354,430.30x = 188,163,677.36 × 76,814,339.45 - Step 4: Simplify right side
136,354,430.30x = 14,453,668,584,142,536 - Step 5: Solve for x
x = 14,453,668,584,142,536/136,354,430.30 - Step 6: Final answer
x = 106,000,725.85
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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.