Finding the Fourth Proportional to 107,814,909.60, 161,612,139.60 and 53,143,408.80
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Solution
The fourth proportional to 107,814,909.60, 161,612,139.60 and 53,143,408.80 is: 79,660,781.92
Step by Step Solution
- Step 1: Write the proportion equation
107,814,909.60 : 161,612,139.60 = 53,143,408.80 : x - Step 2: Convert to fraction form
107,814,909.60/161,612,139.60 = 53,143,408.80/x - Step 3: Cross multiply
107,814,909.60x = 161,612,139.60 × 53,143,408.80 - Step 4: Simplify right side
107,814,909.60x = 8,588,620,001,805,468 - Step 5: Solve for x
x = 8,588,620,001,805,468/107,814,909.60 - Step 6: Final answer
x = 79,660,781.92
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.