Finding the Fourth Proportional to 125,213,207.60, 187,819,811.40 and 76,840,266.80
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Solution
The fourth proportional to 125,213,207.60, 187,819,811.40 and 76,840,266.80 is: 115,260,400.20
Step by Step Solution
- Step 1: Write the proportion equation
125,213,207.60 : 187,819,811.40 = 76,840,266.80 : x - Step 2: Convert to fraction form
125,213,207.60/187,819,811.40 = 76,840,266.80/x - Step 3: Cross multiply
125,213,207.60x = 187,819,811.40 × 76,840,266.80 - Step 4: Simplify right side
125,213,207.60x = 14,432,124,418,301,682 - Step 5: Solve for x
x = 14,432,124,418,301,682/125,213,207.60 - Step 6: Final answer
x = 115,260,400.20
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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.