Finding the Fourth Proportional to 129,482,965.44, 178,684,407 and 70,744,370.40
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Solution
The fourth proportional to 129,482,965.44, 178,684,407 and 70,744,370.40 is: 97,626,091.82
Step by Step Solution
- Step 1: Write the proportion equation
129,482,965.44 : 178,684,407 = 70,744,370.40 : x - Step 2: Convert to fraction form
129,482,965.44/178,684,407 = 70,744,370.40/x - Step 3: Cross multiply
129,482,965.44x = 178,684,407 × 70,744,370.40 - Step 4: Simplify right side
129,482,965.44x = 12,640,915,873,512,354 - Step 5: Solve for x
x = 12,640,915,873,512,354/129,482,965.44 - Step 6: Final answer
x = 97,626,091.82
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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.