Finding the Fourth Proportional to 140,698,305.60, 194,163,514.47 and 78,819,079.74
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Solution
The fourth proportional to 140,698,305.60, 194,163,514.47 and 78,819,079.74 is: 108,770,247.55
Step by Step Solution
- Step 1: Write the proportion equation
140,698,305.60 : 194,163,514.47 = 78,819,079.74 : x - Step 2: Convert to fraction form
140,698,305.60/194,163,514.47 = 78,819,079.74/x - Step 3: Cross multiply
140,698,305.60x = 194,163,514.47 × 78,819,079.74 - Step 4: Simplify right side
140,698,305.60x = 15,303,789,529,609,572 - Step 5: Solve for x
x = 15,303,789,529,609,572/140,698,305.60 - Step 6: Final answer
x = 108,770,247.55
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.