Finding the Fourth Proportional to 142,219,638.68, 196,279,029.36 and 80,343,963.05
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Solution
The fourth proportional to 142,219,638.68, 196,279,029.36 and 80,343,963.05 is: 110,883,667.18
Step by Step Solution
- Step 1: Write the proportion equation
142,219,638.68 : 196,279,029.36 = 80,343,963.05 : x - Step 2: Convert to fraction form
142,219,638.68/196,279,029.36 = 80,343,963.05/x - Step 3: Cross multiply
142,219,638.68x = 196,279,029.36 × 80,343,963.05 - Step 4: Simplify right side
142,219,638.68x = 15,769,835,081,408,312 - Step 5: Solve for x
x = 15,769,835,081,408,312/142,219,638.68 - Step 6: Final answer
x = 110,883,667.18
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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.