Finding the Fourth Proportional to 87,129,968.90, 130,694,953.35 and 83,161,876.10
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Solution
The fourth proportional to 87,129,968.90, 130,694,953.35 and 83,161,876.10 is: 124,742,814.15
Step by Step Solution
- Step 1: Write the proportion equation
87,129,968.90 : 130,694,953.35 = 83,161,876.10 : x - Step 2: Convert to fraction form
87,129,968.90/130,694,953.35 = 83,161,876.10/x - Step 3: Cross multiply
87,129,968.90x = 130,694,953.35 × 83,161,876.10 - Step 4: Simplify right side
87,129,968.90x = 10,868,837,517,387,978 - Step 5: Solve for x
x = 10,868,837,517,387,978/87,129,968.90 - Step 6: Final answer
x = 124,742,814.15
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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.