Finding the Fourth Proportional to 159,609,965.40, 239,414,948.10 and 86,798,611.80
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Solution
The fourth proportional to 159,609,965.40, 239,414,948.10 and 86,798,611.80 is: 130,197,917.70
Step by Step Solution
- Step 1: Write the proportion equation
159,609,965.40 : 239,414,948.10 = 86,798,611.80 : x - Step 2: Convert to fraction form
159,609,965.40/239,414,948.10 = 86,798,611.80/x - Step 3: Cross multiply
159,609,965.40x = 239,414,948.10 × 86,798,611.80 - Step 4: Simplify right side
159,609,965.40x = 20,780,885,139,249,048 - Step 5: Solve for x
x = 20,780,885,139,249,048/159,609,965.40 - Step 6: Final answer
x = 130,197,917.70
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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.